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Operator
Ladies and gentlemen, thank you for standing by. Welcome to Elanco Animal Health fourth quarter 2025 earnings conference call. (Operator Instructions)
I'd now like to hand the call over to Tiffany Kanaga, Vice President of Investor Relations. You may begin.
Tiffany Kanaga - Investor Relations
Good morning. Thank you for joining us for Elanco Animal Health's fourth quarter 2025 earnings call. I'm Tiffany Kanaga, Vice President of Investor Relations and ESG. Joining me on today's call are Jeff Simmons, our President and Chief Executive Officer; Bob VanHimbergen, our Chief Financial Officer; and [Beth Haney] from Investor Relations.
The slides referenced during this call are available on the Investor Relations section of elanco.com.
Today's discussion will include forward-looking statements. These statements are based on our current assumptions and expectations and are subject to risks and uncertainties that could cause actual results to differ materially from our forecast. For more information, see the risk factors discussed in today's earnings press release as well as in our latest Form 10-K and 10-Q filed with the SEC. We do not undertake any duty to update any forward-looking statements.
Our remarks today will focus on our non-GAAP financial measures. Reconciliations of these non-GAAP measures are included in the appendix of today's slides and in the earnings press release. References to organic performance exclude the estimated impact of the Aqua business, which was divested July 9, 2024, and certain royalty and milestone rights that were sold to a third party in May 2025. After our prepared remarks, we will be happy to take your questions.
I will now turn the call over to Jeff.
Jeffrey Simmons - President, Chief Executive Officer, Director
Thanks, Tiffany. Good morning, everyone. 2025 was a year of significant delivery for Elanco across all three of our priorities: growth, innovation and cash. As highlighted on Slide 4, Elanco delivered a strong fourth quarter with 9% organic constant currency revenue growth. We outperformed the high end of guidance for revenue, adjusted EBITDA and adjusted EPS.
Growth was led by US farm animal up 17% and US pet health, up 10%. This now marks 10 consecutive quarters of underlying total growth.
Revenue from innovation exceeded expectations in 2025 at $892 million for the year as the fourth quarter was our largest quarter for innovation to date. We are raising our 2026 outlook for innovation to $1.15 billion, reflecting contributions across a broad set of geographies, species and products. Our continued focus on cash, combined with strong results, improved our net leverage ratio faster than planned to 3.6 times at year-end. We now expect to finish 2026 at 3.1 times to 3.3 times.
With our consistent execution, we are well positioned to introduce 2026 guidance in line with our longer-term algorithm. We expect full year organic constant currency revenue growth of 4% to 6%, adjusted EBITDA of $955 million to $985 million, representing growth of 8% at the midpoint and adjusted EPS of $1 to $1.06, representing growth of 10% at the midpoint. This guidance continues our prudent, balanced approach in a dynamic macro environment.
On Slide 5, let me ground today's discussion and accountability and transparency by sharing a checklist for the year in review. Elanco delivered across our full set of 2025 commitments to our customers and our shareholders. We have entered our new era of growth with a track record of consistent execution. Innovation revenue cleared a bar that was raised each quarter in 2025.
We brought the entire big six across the finish line with Befrena's December approval. This is a real testament to the optimized innovation engine that Ellen's team has built over the past few years.
Organic constant currency revenue growth reached 7% for the full year. with balanced contributions across species and geographies as well as between volume and price. 2025 revenue, adjusted EBITDA and adjusted EPS all exceeded last February's expectations with steady outperformance throughout the year. And we delevered about 0.5 turn faster than expected, while also refinancing our Term Loan B ahead of schedule.
Team Elanco, I want to extend my gratitude for an incredible year. Your level of engagement and execution has never been higher while you're unwavering dedication to transforming animal care has truly shown.
Looking more closely at the fourth quarter revenue performance on Slide 6, and we break down the 9% underlying organic constant currency revenue growth. This chart demonstrates strength across our global business with all four quadrants growing nicely.
US Pet Health had a robust quarter, up 10%. Credelio Quattro and Zenrelia led solid growth in the vet clinic and also drove broader portfolio benefits with positive trends for Galliprant. Retail likewise grew in Q4 and dispensing trends were healthy across our OTC parasiticides, including Seresto and the Advantage family.
Importantly, our strong end of the year for US Pet Health led us to gain share in every major category for the full year 2025. Prescription parasiticides osteoarthritis pain, dermatology and vaccines.
Moving to international pet health. We achieved 8% organic constant currency revenue growth, driven by Zenrelia, Credelio and Adtab. Zenrelia is exceeding expectations in the $700 million plus international market with double-digit share in several key markets and strong early traction in Europe, the UK and Australia.
US Farm Animal delivered an excellent quarter, up 17% on top of 6% last year, building on our market leadership. Cattle led the way with strong growth for Experior and Pradalex with positive contributions from poultry as well.
And finally, international farm animal was up 4% in organic constant currency with growth coming from ruminants, swine and poultry.
Looking at Slide 7. We delivered $892 million of innovation revenue in 2025, outperforming across a diverse basket led by Credelio Quattro, Experior, Zenrelia and Adtab. We are now committing to at least another $250 million of growth in 2026 to $1.15 billion. This target is led by our big six gaining traction in the global marketplace with our no-regret launch approach. We are driving sustainable growth as we expect the big six to double in revenue from 2025 to 2028, and on top of a stabilizing base.
And we've refilled the pipeline to deliver a consistent flow of high-impact innovation.
Let's further discuss the progress of our big six major innovation products on Slide 8. And starting with Credelio Quattro. This groundbreaking parasiticide, the first FDA-approved product with four active ingredients is the fastest blockbuster in our history and we believe has the potential to become our biggest product class ever.
We see Quattro as best medicine with its four dimensions of differentiation, fueling a growth trajectory more like a first-to-market product. In the fourth quarter, Quattro continued to gain dollars share of US broad spectrum sales and was the only one to gain share in the quarter in vet clinics, demonstrating continued strong momentum almost a year after its launch. Credelio Quattro enters 2026 with the most momentum and the $1.4 billion US broad-spectrum parasiticide market.
We have significant runway ahead, with approximately one-third of clinics penetrated today and plenty of room to grow share within those clinics. A good leading indicator is Kinetics Puppy Index, where Quattro ranked highest in Q4 versus other broad spectrum anddectose and grew versus Q3. Quattro is gaining share and also expanding what is the fastest-growing animal health market today. the US broad spectrum anddectose market up 30% year-over-year.
We expect Quattro to lead that growth through its profitability for the clinic and its differentiated offering for the pet owner, aided by our DTC investments, expanded sales teams and distribution partners.
Importantly, Quattro has boosted our broader Elanco portfolio in clinics. Its momentum and portfolio benefits drove Elanco to be the only major animal health player to see share gains for the total parasiticide prescription portfolio in US vet clinics in 2025.
Looking beyond the US, Quattros global rollout begins now with approval in Australia last week, with this approval, we are kicking off our expansion into the $700 million international market, which is growing double digits.
Next, we couldn't be more pleased with Zenrelia's performance in the $2 billion derm market. Every quarter, Zenrelia's efficacy profile becomes more recognized and its success is becoming more global. We have a special product in Zenrelia. The Zenrelia momentum is building with December as our best month yet. Importantly, we exited the month with double-digit share of the US
JAK market. This strength is continuing into January. We're now in about half of the clinics in the US and the reorder rate is over 80%.
Trends accelerated after the label update in September, adding 2,500 new purchasers. We remain committed to making the US label consistent with the other 40 countries where it's already approved without restrictions.
Zenrelia's Q4 international results were exceptional. In our first cohort of launches, Brazil, Canada and Japan, we've already achieved year three or year four analog share in just the first year. Zenrelia's JAK market share in Brazil has reached 40%, and Japan is over 30%. The rapid success and overwhelmingly positive customer feedback are driven by Zenrelia's strong efficacy and support our long-term belief in the product with a clean label.
We're also encouraged by the early traction in Europe, the UK and Australia. Zenrelia is outperforming the new competitive entrant in the EU markets. Local sellout data confirms double-digit JAK market share in France, Italy and Spain. We've already contracted with all major EU corporate accounts, helping to drive growth ahead of our expectations.
We've also achieved more than 10% share in the UK.
Our EU head-to-head study results are coming to life in the field, and we're the only player providing that competitive data. Again, efficacy is the differentiator across Europe and around the world with over 1 million dogs treated with Zenrelia globally. Its efficacy is resonating strongly with vets and pet owners alike. Zenrelia works, and it works really well.
Moving now to Befrena, our second monoclonal antibody and our second derm product. We gained USDA approval on December 31, fulfilling our year-end commitment. We expect a launch in the second quarter of 2026 as we progressed through the anticipated manufacturing ramp-up. A phase launch is very typical for monoclonal antibodies or MAB products as we scale our bioreactors. Our expanded facilities in Elwood, Kansas are ready, our manufacturing plans are right on track, and we feel good about our overall MAP capabilities for Befrena and beyond.
Befrena offers positive differentiation on convenience, value and efficacy. It's recommended at a dosing interval of six to eight weeks post treatment versus four to eight weeks for the current market competitor. And when we showed a close proxy of the label to approximately 350 veterinarians, 83% responded they are likely to use Befrena especially in seasonal cases.
Finally, our OTC parasiticide Adtab has continued its robust growth trajectory with sales up more than 50%. Adtab is the fastest-growing brand in the $600 million OTC/comarket in Europe, achieving more than 50% oral OTC share to become number 1 in less than two years on the market.
Moving to farm animal. Experior continues to grow nicely, up 35% in Q4 against a tougher compare. We are benefiting from the historically small US cattle herd size while noting that Happer retention recently turned positive for the first time since January 2017.
Experia crossed the $200 million mark in 2025, up nearly 80% for the full year with significant runway still ahead for this blockbuster and its portfolio benefits. We see strong opportunity in an estimated potential market of over $350 million in the US and Canada through extending the days of use, continued adoption and price with geo expansion as another longer-term growth driver. Lastly, regarding Bovaer. We continue to see demand from CPG companies that support sustained interest and consistent count numbers.
With farmer retention remaining over 90%. We will continue to invest in Bovaer to achieve its expected potential by enhancing the product's strategic optionality and demonstrating an increased value proposition for farmers and CPG companies.
Long term, we continue to view Bovaer as a blockbuster with near-term growth at a measured pace in a dynamic market backdrop.
Moving to Slide 9. We offer some recent highlights across the three parts of our IPP strategy, innovation portfolio and productivity. Ellen and her team have built a science-based engine and organizational capability to maximize throughput. With the big six now each approved in the US without attrition, we are focused on the next wave with 5 to 6 blockbuster potential approvals expected through 2031.
Elanco's R&D engine is humming with depth and expertise and a laser focus on the next milestones, all with a vision of creating a consistent flow of high-impact innovation. At the same time, we're optimizing our diverse portfolio to drive near-term growth and to gain share. We experienced broad-based organic constant currency top line growth in 2025 across our top 5 product franchises and in 9 of our top 10 countries. And very importantly, our launch excellence is enabling share gains with accelerating pricing.
As Bob will detail, we achieved 2% price growth in 2025, in line with our expectations, and we anticipate acceleration in 2026, including our largest increase and five years to US. Fed clinics. Our pricing strategy reflects our latest innovation and the value of our total portfolio to customers.
We've also signed an agreement to acquire AHP International, a Dutch-based farm animal health innovator focused on a portfolio of products for cattle that improves animal health and optimize efficiency while reducing the need for antibiotics.
The deal accelerates Elanco's efforts to expand our leadership in the dairy industry, particularly in North America and Europe, growing both our share of voice and enhancing our portfolio with exciting solutions that supports transition Cal Health, one of the greatest needs in the dairy industry. We're excited about the potential of this opportunity to bring needed solutions to producers and one of the fastest-growing proteins. And we believe one of the greatest market opportunities in animal health.
At the same time, we continue to rapidly pay down debt and strengthen our balance sheet. We improved our net leverage ratio by two turns in just two years. with the under 3 times landmark expected in 2027. And as Bob will also describe momentarily, our company-wide productivity initiative, Elanco Ascend, is off to a good start. To drive meaningful efficiencies and margin enhancement starting in 2026.
With that, I'll pass it to Bob to review our fourth quarter results and financial guidance.
Robert VanHimbergen - Executive Vice President, Chief Financial Officer
Thank you, Jeff, and good morning, everyone. I will focus my comments on our adjusted measures, so please refer to today's earnings press release for a detailed description of the year-over-year changes in our reported results.
Starting on Slide 11. We delivered $1.14 billion of revenue in the fourth quarter, representing an increase of 12% on a reported basis. Organic constant currency growth was 9%, primarily driven by an increase in volume with price contributing.
Slide 12 provides revenue by the four quadrants of our business. Globally, Pet Health revenue grew 9% in constant currency during the fourth quarter. US performance delivered 10% growth, driven by demand for our key innovation products Credelio Quattro and Zenrelia. Outside the US, the pet health business grew 8% in constant currency, led by Zenrelia.
On a global basis, our farm animal business achieved 10% organic constant currency growth. The US Farm Animal business grew 17%, driven by the strength of Experior, Pradalex and poultry vaccines. Outside the US, our Farm Animal business contributed 4% in organic constant currency driven by broad geographic and species growth led by ruminants in Europe and Latin America, poultry in Europe and the US and swine in the APAC region.
Continuing down the income statement on Slide 13. Adjusted gross margin increased 30 basis points to 51.2%, primarily driven by price, increased sales volumes and mix benefits, partially offset by the flow-through of higher inventory costs. Year-over-year expansion was also impacted by the outperformance of our US farm animal business, which carries lower gross margins, but more comparable EBITDA margins to the Pet Health business.
Our operating expenses grew by 10% in constant currency. This planned increase supports our strategic investment in our global pet health product launches and our R&D pipeline development. As expected, interest expense totaled $47 million in the quarter, a 2% increase compared to the same period last year. As a reminder, we have the expiration of a favorable interest rate swap amortization benefit in the third quarter of 2025, which originated from a 2022 interest rate swap restructuring.
On Slide 14, we include a bridge for fourth quarter results compared to the prior year. Adjusted EBITDA was $189 million, an increase of $12 million or 7%, adjusted EPS was $0.13 in the quarter, a 7% decrease year-over-year driven by an anticipated higher tax rate primarily due to timing of onetime benefits.
On Slide 15, we provide the full year income statement highlights. We generated $4.715 billion in reported revenue, representing 6% growth. Revenue breakdown by key affiliates and products are available on Slides 29 and 30.
Continuing down the P&L, Full year adjusted gross margin of 54.9% was flat compared to 2024. The favorable impacts from price, increased sales volumes and mix benefits were offset by inflationary pressures and higher manufacturing costs. These factors, combined with an increased investment in our strategic growth initiatives resulted in adjusted EBITDA of $901 million for the full year, as shown on Slide 16.
Full year adjusted EPS came in at $0.94 and compared to $0.91 in 2024. The effective tax rate for 2025 was 21.8%, a year-over-year increase of 370 basis points, primarily due to the recognition of nonrecurring tax credits in 2024.
On Slide 17, we provide an update on our balance sheet. Cash generated from operations was $108 million in the quarter compared to $177 million in the prior year. The year-over-year reduction reflects expected cash tax payments related to the 2024 Aqua divestiture, partially offset by continued momentum and working capital improvement.
We ended the quarter with net debt of approximately $3.2 billion, and a net leverage ratio of 3.6 times. Looking ahead, we remain disciplined in our capital allocation strategy, prioritizing debt paydown alongside making high-value strategic investments like AHV. The acquisition is not factored into our guidance, given its size and additive bolt-on nature and expected second quarter close, we anticipate AHV to provide a modest contribution to revenue and adjusted EBITDA in 2026. The with greater benefit in 2027, and it will not impact our deleveraging time line.
We expect to reduce leverage to 3.1 times to 3.3 times in 2026 regardless of AHV and a long-term target range of 2 to 2.5 times and with a path to sub-3 times leverage in 2027, as previously stated in our December Investor Day.
Now let's move to our guidance starting on Slide 19. Our 2026 full year outlook is consistent with the framework provided at Investor Day. We expect organic constant currency growth of 4% to 6%, which translates to revenue between $4.95 billion and $5.02 billion. This guidance incorporates an accelerating contribution from price versus 2025. And reflecting the enhanced value that our latest innovation and our comprehensive portfolio bring to our customers.
For adjusted EBITDA, we are forecasting $955 million to $985 million, which represents 8% growth at the midpoint. We expect Elanco Ascend to enable adjusted EBITDA margin expansion, while at the same time, we will continue our strategic investment in the global launches of our innovation portfolio and advancement of our R&D pipeline. Gross margin is expected to be up approximately 40 basis points and OpEx up 7%. Finally, adjusted EPS is expected at $1 to $1.06 or up 10% at the midpoint. Slide 31 in the appendix provides a number of additional assumptions to help support your modeling efforts.
Our first quarter guidance presented on Slide 20, includes organic constant currency revenue growth of 4% to 6% and led by our Farm Animal business and good growth anticipated in Pet Health, which translates to $1.28 billion to $1.305 billion in revenue. Adjusted gross margin is expected to decline year-over-year with the timing of inflation and the flow-through of higher inventory costs, particularly in the first half of the year.
We are continuing to invest in our launches, with OpEx up 7% or 4% in constant currency. Adding it all up, we anticipate adjusted EBITDA of $290 million to $310 million, representing 9% growth at the midpoint and adjusted EPS of $0.33 to $0.36.
Turning to Slide 21. We summarized the 2026 headwinds and tailwinds integrated into our guidance. Our outlook anticipates sustainable competitive revenue growth as our innovation portfolio scales globally on top of a stabilizing base. This innovation, combined with strategic pricing helps to insulate us from broader macro pressures. In pet health, we expect to gain incremental share by leveraging our comprehensive portfolio and OTC retail leadership.
We are now shipping product to three major new retailers.
We also acknowledge that these tailwinds are balanced against competitive pressures, including generics within the market. On the farm animal side, despite tough US comparisons, we see a clear runway for growth driven by new cattle products, favorable producer economics and accelerating animal protein consumption. We expect to further strengthen our leadership position in both ruminant and poultry.
On the margin front, Elanco Ascend is our company-wide productivity program focused on general and administrative cost savings as well as manufacturing efficiencies. I am pleased with the progress we have achieved so far in 2026.
The recently communicated restructuring is on track to generate $25 million in savings this year. These savings are expected to directly contribute to our profitability, reflecting our commitment to operational efficiency and prudent cost management. Additionally, our teams are actively advancing key AI, operational and procurement initiatives, which are expected to result in both P&L and cash flow benefits.
Now I'll hand it back to Jeff for closing comments.
Jeffrey Simmons - President, Chief Executive Officer, Director
Thanks, Bob. Before we move to Q&A, I want to reiterate my deep confidence in Elanco's trajectory. We are not just a company delivering results with significant momentum for also a dedicated team. building a durable long-term foundation for the future of Animal Health.
On Slide 22, you will see that this is more than a story about Elanco's compelling growth proposition. It's about the accelerating opportunity across the broader animal health industry and our ability to lead it. It's about having the best of pharma with science-based innovation, disciplined regulation and high barriers to entry. This, combined with strong customer relationships built on trusted brands and a cash market that responds to growing value propositions from winning portfolios. It's about generational shifts in both pet health and farm animal where pets and protein are increasingly central to culture, care and global demand.
And together, it's about the animal health industry at an inflection point, projected to add $20 billion in value as we enter the next decade. With Elanco uniquely positioned to convert momentum across both pet and farm into sustainable, consistent growth. Simply, we will grow from both expanded market share and a growing industry.
Let's take a closer look. In Pet Health on Slide 23, we're seeing a fundamental shift in pet care as owners take a more active role, choosing not only what products to use, but how and where they access care. While vet visit volumes remain a metric to track, the more powerful shift is in the global consumer behavior where access, convenience and willingness to spend are becoming more material and more meaningful.
Today, subscription sales account for 40% of pet care dollars with omnichannel consumers spending 30% more annually than single channel shoppers. The pet owners behavior is changing. Our strategy is built around meeting the modern pet owners where, when and how they choose to engage. This unique omnichannel approach is core to our pet health strategy and is driving our industry-leading growth.
Over on the farm animal side, on Slide 24, we're capitalizing on the accelerating global animal protein consumption, which is projected now to grow at 5% annually in the US alone. There are several key factors driving the real food movement, fueled by consumer focus on health and wellness.
First, 70% of US consumers are actively increasing protein intake. Second, updated dietary guidelines now recommend nearly doubling current average protein use. Also, by 2035, 21% of Americans are projected to use GLP-1 therapies who will consume 40% to 50% more protein, and this trend is now globalizing. Increasing protein intake is a key also for mule retention with an aging population.
The number of people over 60 is expected to expand by more than 25% globally by 2030.
And finally, taste still drives two-third of protein choices, making animal protein the most accessible, cost-effective preference. Strong demand for high-quality protein presents significant opportunities for Elanco and our customers, both in the near and long term.
To close on Slide 25, our strategic focus on growth, innovation and cash is clearly paying off, demonstrated by our strong performance in 2025 and the robust outlook for 2026 and beyond.
Elanco is a different company today, more agile, more innovative, more capable than ever before. We are building on our 70-year legacy of delivering for our customers, and we come into 2026, entering our new era of growth, well positioned to continue transforming animal care and to create long-term value for our shareholders. Thank you. With that, I'm going to turn it over to Tiffany to moderate the Q&A.
Tiffany Kanaga - Investor Relations
Thanks Jeff. We'd like to take questions from as many callers as possible, so we ask that you limit yourself to one question and one follow-up. Operator, please provide the instructions for the Q&A session, and then we'll take the first caller.
Operator
(Operator Instructions)
John Block, Stifel.
Jonathan Block - Equity Analyst
Great, thanks guys. Good morning. The Zenreia International share gains Is that really an international share gains really stood out to me and implies switching to Zenrelia from the incumbent because you just really can't get that level of share that quickly in this market dynamic without switchers. So maybe, Jeff, just to kick things off, can you elaborate on the ramping internationals and Zenrelia share gains and then what that may mean for the US if the label is altered positively down the road? And then I'll ask my follow-up thanks.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, Thank you, John. Thanks for opening with maybe one of the most exciting things in the quarter. Zenrelia is all about efficacy. As I said in my comments, every quarter, John, Zenrelia efficacy is more and more recognized and that is happening in the international markets.
So that was in Japan three weeks ago. It's the buzz in the marketplace. We've exceeded 30% share there, acting very much like a differentiated best medicine product. Brazil is a very mature market compared to what people think, and we're a 40% share.
So yes, I would tell you that efficacy and in derm, it is all about stopping the dog's itch, and we're seeing that really resonate. In Europe, interestingly, even with the new competitive entrant we continue to climb and be the leading market share gainer in Europe, as I noted in some of the major markets. And again, it's coming back to clean labels high efficacy profile, and we do see this product with greater expectations and it's far exceeded our expectations in international. So more to come.
And as I step back, I think, to your linkage to the label, I think it's really important to understand that, hey, we now have 1 million dogs on. We've got -- we picked up 2,500 new clinics in the US were nearly 50% in the US 1.5 years of usage, 40 countries with clean labels with good pharmacovigilance data, and we're the only company out there using head-to-head efficacy studies, which I think also is significant. So we are optimistic, and we can talk more about the label.
We're optimistic that with our submission into the FDA that we look forward to hearing a good response from the FDA soon.
Robert VanHimbergen - Executive Vice President, Chief Financial Officer
Yeah and John, maybe I just maybe add on. Our guidance assumes the label as is right now.
Jonathan Block - Equity Analyst
Yeah, Okay. That's helpful, Bob. And maybe I'll zoom out for the second question. Your the first industry leader to maybe be teed up for an earnings call post some of the news on the distributor side. So would love your thoughts on the Covetris and MWI merger and what that may mean for manufacturers.
And more specifically, Elanco as I believe you guys have a solid, broad relationship with Covetris, but it's certainly a lot of share going into the hands of one. So any thoughts would be great.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, for the question. I have to start with the '25 momentum and '26 early fast start. We've got a great relationship with distributors. We're adding them a lot of value, and they're adding us a lot of value right now.
The major distributors. You know they're very good at launching new products. And we're the only one -- today we have competitive advantage, I believe, strongly, and you probably picked us up at VMX, Western last week, there's a lot of momentum in those distributors with the Credelio Quattro, the Zenrelia. We're the only company that really has our total comprehensive portfolio with them in a buy-sell agreement where others have actually retracted.
So we're focused right now on the current state. Of course, as the structure evolves, we'll continue to focus on value and the value they can provide, and that's the lens that we're going to look through. But Bobby and team, I think, have done an amazing job. And when you step back and look at US Pet Health, we gained share in every category this year from derm to para to pain and also vaccines.
And I attribute to contribute some of that to the distributors.
Jonathan Block - Equity Analyst
Thanks guys. Appreciate the time thank you, John.
Operator
Michael Ryskin, Bank of America.
Michael Ryskin - Analyst
Great, thanks for taking the question, guys, As on the results. I want to ask first on price. You guys called out accelerating price a number of times looking forward to 2026. I was wondering if you could quantify that a little bit more specifically. Just more broadly.
In 2025, I think you had, we'd call it, introductory pricing or sort of initial go-to-market pricing for some of your products. For '26, is this just a matter of that being lifted and going more to a normal price? Are you taking the price more aggressively? Maybe you can just comment on how much of that is coming from the big six or the new products versus the rest of the portfolio? Then I've got a follow-up. Thanks.
Unidentified Company Representative
Sure, Michael. Thanks for the question. So a couple of points. One, I'll point you to Investor Day, right, where we did highlight we expect mid-single-digit growth, which does include price.
As we think about 2026, we do expect price to accelerate from where we were in 2025. 2025 as a reminder, was at 2% and really, that's reflecting the enhanced value we're bringing with innovation and our comprehensive portfolio that we're bringing to customers.
Jeff highlighted in his prepared remarks that in our US Pet Health business here in the US, we took the highest price increase to vets in the last five years, all right? So we'll continue to price based on the value we're bringing to customers. I mean, the last thing I would highlight is you think about pricing in 2025, we had a lot of launches -- and those launches were not a contributor to price. We'll start lapping those in 2026.
And so the Zenrelia and Quattro will have a pricing component in this 2026 year compared to 2025. So I would walk away with the expecting price to accelerate from where we were in the last 12 months.
Michael Ryskin - Analyst
Okay. And you had some relate comments when you were talking about Quattro in terms of not just the strong results you've seen with that product itself, but sort of the uplift for the rest of the portfolio, the ability to use that to gain share for other products as you bring a more complete portfolio to your customers. Just wondering how you think about that continuing in '26 as Zenrelia ramps, as you got Befrena coming on, maybe kind of tying that back to John Block earlier on distributors. Is it enabling you to become a better competitor as you go in for the big contract renewals, either with distributors or individual vet clinics. Just talk about the broader up what you're getting from those.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, Thank you, Michael. Great question. Yes, Quattro had a great quarter, definitely acting like best medicine, only major animal health company gaining US Rx para share, which I think is a real representation and our share continues to climb, as we not only come to the fourth quarter, but even here in the beginning of the year, and we're still seeing more than 75% being new starts.
But I would point to a couple of things, specific number. We've got -- if you think about we're near one-third of the clinic, so 10,000-plus clinics, we got 2,600 that have actually by purchasing Quattro are now adding on additional products. So we're seeing that additive portfolio effect, I think, is definitely obvious. And we're seeing that confidence with the puppy index, as I mentioned, is it's climbing. It's the highest of all the major products, and it grew from Q3, and we're in the number 1 position on that puppy index.
So we see that.
I would also point to corporates. As I mentioned, it's on the slide, but I didn't get into it in my commentary, that we actually saw corporates really move in on this portfolio effect. So 90% of our corporates, which grew significantly in number, all of them grew only 13% grew in 2024. And the European team has done a masterful job. We've got all the corporates on the Zenrelia product as well.
So we're seeing it with portfolio. We're seeing it with corporates. We're seeing the confidence from the corporates even in the Puppy index. So yes, we do expect this to be beneficial.
And then when we come with two derm products, right now, then we can say not only do we have as equal of a portfolio, we've got best medicine. We got best medicine in Zenrelia, Quattro, and we believe Befrena has got, again, differentiation. So I think you're onto a very important point.
Operator
Erin Wright, Morgan Stanley
Erin Wright - Analyst
Hey, thanks. So can you speak to any stock destocking dynamics in the quarter or as we head into some of the seasonal purchasing from some of the distributors that typically happens in the first quarter. And one of your competitors, a very significant player in parasiticides historically is further deemphasizing, I think you alluded to this earlier, further deemphasizing distribution in 2026. I guess how much does that help your positioning in parasiticides, especially just continuing the conversion to combination parasiticide things.
Jeffrey Simmons - President, Chief Executive Officer, Director
Thanks, Erin. Yes, and I know you've been engaged in some of the major industry shows. I'll just take the second question first, and that is that we see our relationship as good as it's ever been with distribution. They're adding a lot of value. and all the way down to the field force.
They're working very much in collaboration with the largest sales force we've ever had in US Pet Health ourselves.
So our share of voice has never been stronger on Elanco with our team and with distribution as well and then the investment we're making in the media.
Look, on stocking, it's real clear to us no change. We've got distributors ordering multiple times per quarter. There's a strong dispensing and you can see it, dispensing demand coming out of the clinics, the multiple orders going in, we don't see stocking having really any effect at all as we head into this spring.
Erin Wright - Analyst
And then can you give us an update specifically on the time line for the label update for Zenrelia in the US? I think before, maybe at VMX, you mentioned five, six months, so now we should hear an update on that front. Is that still the case?
And then -- just where are you matching up? And I think you also alluded to this earlier, but where are you matching up to the existing competitor versus the new entrant in Europe specifically. So we don't have head-to-head data for new , but where are you seeing the vets actually use the different JAKs in Europe?
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, Thank you. Look, first of all, on the label, I just want to say, we are in a constructive dialogue with the FDA. They've made one adjustment to the labels. We mentioned we picked up 2,500 new users since then.
I step back, Erin, as I just mentioned earlier, you've got 1 million dogs, 1.5 years of use, 40 countries with clean labels, strong pharmacovigilance data. We've submitted the PCR data before to get the first label change.
And then this was a request from the CVM at the FDA on the booster data and the package that we submitted in the fall. We've not given a date, but we are confident with everything that I just mentioned that we believe with this data, it allows us to get a label that looks a lot more aligned with the other 40 countries, and we do look forward to an FDA response and we'll update you when that happens.
Look, I think the story in Europe is it actually probably has profiled Zenrelia's efficacy in a more differentiated way than any market that we've been in. And not only the head-to-head study, but the head-to-head study is being seen by the KOLs in Europe in a very significant way. We're off to a much faster start than the other market entrant and double digit in the first months is something that does not look like an analog of a second or third to market products.
So where is it being used? I mean it's being used in first line in a lot of these big countries, like I mentioned, like France and Italy and Spain and off to a good start. And look, it's a small world, too. There's a lot of buzz from the Canada, Japan and Brazil markets as well. So more to come.
We're coming into derm season as we get into that spring and summer, and that sets up well for Zenrelia.
Operator
Brandon Vazquez, William Blair.
Brandon Vazquez - Analyst
Hey everyone, thanks for taking the question and Congrats on a strong end of the year here. I wanted to start for some of the guidance, maybe just push a little bit, just to understand if there's conservatism baked in here, if there's something we're missing because if I think of a price of 2 points in a volume of 5 points that gets you 7% growth in '25. We're talking about meaningfully more price coming through in 2026. And I don't think there's any reason that volume should meaningfully decelerate. So that algorithm already puts you above your initial 2026 guidance, the high end of that range.
So again, like the question is, one, am I -- are we simply baking in some conservatism here? I want to make sure that we're not missing any big moving pieces that would meaningfully change that algorithm in the '26 guide.
Unidentified Company Representative
Yeah, So thanks for the question, Brandon. So listen, we feel great about the momentum that we've seen exiting 2025. And listen, our guidance is right in line with the framework we gave at Investor Day, so mid-single-digit top line growth, high single-digit EBITDA growth and low double-digit EPS growth. And again, we're going to be focusing on deleveraging and getting to that low 3s by the end of the year.
But listen, we feel great about the basket of innovation. We feel great about Elanco Ascend coming in. But listen, there's -- we're also in an environment where we see higher than normal inflation. We're being responsive and cognizant of competitive response. And as we mentioned at Investor Day, we're going to take a wide range of potential headwinds and tailwinds and be transparent on that.
But listen, we feel good about the 2026 guide we gave is also the long-term algorithm we gave as well. And then the last thing I would maybe just highlight when you're looking at just growth trends. Keep in mind, we are lapping some significant growth within that basket of innovation. Our basket of innovation grew $400 million in 2025, and we've -- we're growing that $250 million here with the recent uplift additional $50 million that Jeff highlighted.
Brandon Vazquez - Analyst
Great. And then one maybe follow-up is a little bit of a bigger picture question on the commercial side. I think in the past, we've talked about trying to more meaningfully get into the corporate accounts, you need a broader portfolio of innovation. You certainly had a lot of good products coming out. You have more coming, where are you guys today in terms of maybe what inning are you in getting into those big corporate accounts to draw some of that big volume?
Is there are any kind of like portfolio gas left that you need. I think in the past, we've maybe talked about vaccines as being one of those areas. What is the last that you may need to do for the corporates and what's the time lines to start making -- moving that forward a little more? thanks guys.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, thank you, Brandon. So yes, a great finish to the year, our best corporate year, and I know more than five years, we've got a dedicated team. We brought in some additional expertise from industry competitors, and it has been a very big focus point for Bobby and the team and Chris, and so a real credit to them, probably some of the best metrics as we look at lead indicators. So we're seeing growth we're in most all the clinics here in the US
Befrena will be a big addition because you start to now say, Hey, we've got everything that everyone else has and we believe they're differentiated. When you look at Befrena, having efficacy value and convenience differentiation, it last a minimum of six weeks. All of that's going to resonate really well. But I think our offers in our portfolio show that. And again, we see that in the results.
Europe has been tremendous. I mean, to see I'm really surprised by how quickly we got Zenrelia into all the corporates already. So that's been beneficial. But yes, if I had to point to what's next. I think the international pet vaccines will be important.
And that's going to take some time. We know that. Vaccines are continued to be a focus point for us. But as a whole, look for a corporate impact to be a really nice growth driver for us in 2026, and it really comes from the team's working really hard on building best in industry teams.
Operator
Daniel Clark, Leerink Partners.
Daniel Clark - Equity Analyst
Great, thanks, thanks so much. Good morning, everyone. Just wanted to, I guess, first start with Quattro. The further gains via the kinetic index that you saw in the quarter, was that sort of in line with your expectations from a couple of months ago? Or was that incremental upside.
Jeffrey Simmons - President, Chief Executive Officer, Director
Well, I think it's, as we said, to see the jump we had in third quarter and then exceeded again in the fourth quarter. and being the leader in the puppy index, I always have looked with my many years in this industry, the Puppy Index is definitely where people are leaning in and saying, Hey, this is this is the opportunit.
And if I'm going to put you on a product, I'd like you to start on the best that's available today. And I think that's a real statement about Quattro, four active ingredients, four dimensions of differentiation. We've added palatability, which has really come out as a , we think that the fourth -- now dimension of differentiation.
As I mentioned in my trends earlier, Daniel, I think the to comment around 70% of new puppies are in international markets, getting the Australia approval last week and starting the global approvals of Quattro will also be advantageous. So yes, good trends and a nice opportunity here with Quattro. And hey, this space grew 30% last year.
Daniel Clark - Equity Analyst
Great. Just a follow-up. I wanted to ask on your no-regrets policy and sort of leaning into launches that are going well think if they say a lot of your launches are going well at this point. So as we think about the ongoing duration of investing against those, how should we think about that kind of going forward here?
Should we think continued launch support throughout 2026 and into '27 to keep the momentum up? Or like what are the different puts and takes you're thinking about on that front? Thank you.
Unidentified Company Representative
Yeah Daniel. So I would consider us applying the same no regrets approach in 2026 that we had in 2025, and that's not only Befrena, but also the launches we had in '25, right? And we're using data to determine, hey, are we getting the ROI on those investments. And so you do see OpEx, we did guide 7% OpEx growth in '26, and that's particularly associated with the no regrets approach to launches as well as funding R&D for the longer-term benefit of the company.
But again, Elanco Ascend is extremely important, right? This is where Elanco Ascend coming in and ensuring that we are operationally excellent across our entire P&L that allows us to get to that high single-digit EBITDA commitment we've made while also funding R&D as well as the no regrets approach that we're taking with our products.
Operator
Umer Raffat, Evercore ISI.
Umer Raffat - Equity Analyst
Morning, guys. Thanks for taking my question. I have two, if I may. Perhaps, first, on gross margin, I thought I should dig into it a little more because if I step back and think about the $400 million plus in innovation growth in '25, I would have thought there would be a gross margin expansion. And the fact that it was flat almost suggests that the underlying business outside innovation deteriorated in gross margin. How do you think about that, especially because your guidance for '26 assumes about flattish on gross margin, best I can tell, even though the top line is akin to your first half '25 annualized, and we know first half '25 was almost 200-plus bps higher on gross margin.
Unidentified Company Representative
Yeah, Umer for the question. So as we think about just Q4 and I'll pivot into 2026 as well. So in Q4, we did see basis points of improvement in margins, and that was driven from price as well as sales volumes and mix benefits. But that's partially offset by inflationary pressures that we're seeing as well as the flow-through of higher cost of inventory that we've built up throughout the year. And so you'll see that, we saw some of that come out in Q4, and you'll see that come out in the first half of 2026.
So as I look at 2026, first off, we're going to make the right decisions for the long-term success of the business, but we do expect gross margin expansion of 40 basis points year-over-year. Price is going to be a component of that. And again, we expect that price to accelerate from 2025. The basket of innovation, as you've highlighted, we do expect that to grow $250 million. That does carry higher margins than our corporate average.
And then Elanco Ascend, we're seeing good benefits coming through that's just the progress that the global team is making on that.
Now the one thing -- the one or two things I would look at is, one, we do have inflation that's above historical levels, and two, as I mentioned, we have this higher cost inventory flushing through in the first half of the year. And so you'll see our margins enhancing and accelerating throughout 2026. So the second half will be stronger than the first half. But long term, we feel confident in improving margins with the basket innovation, the volume leverage and then again, Elanco Ascend and proactively enhancing margins over the next three to five years.
Umer Raffat - Equity Analyst
Got it. And then also on the innovation guidance of about $250 million plus growth in considering Credelio franchise alone grew almost $137 million in '25. Is it reasonable to assume that half of '26 growth is Credelio franchise alone?
Jeffrey Simmons - President, Chief Executive Officer, Director
I think you're definitely seeing that, that was a major contributor, and I know some of the way you're thinking about Credelio Quattro I would build on Umer and say, we definitely are seeing that kind of a trajectory. We're not going to get into guiding by product, but no question, Quattro ends '25 with more momentum than we expected. International Zenrelia. And if we get this label change, there's a lot of opportunity here with Zenrelia, and Befrena comes in differentiated. So all of that, I think we step back and say, Hey, there's opportunity.
I also think the competitive front has changed some. I don't think the long-acting injectable parasiticides are maybe what were anticipated a year ago. I think that's actually contributing to the bigger growth in the broad spectrum and deco market Umer. So I think the competitive set is different, and that's an advantage as well.
So -- we like it. We are lapping 400 that we mentioned, but we do see really -- what's different about the Elanco story is we got a basket of best medicine in major markets that are growing double digit.
Umer Raffat - Equity Analyst
Thank you very much.
Operator
Navann Ty, BNP Paribas.
Navann Ty - Analyst
Hi, thanks for taking my question. Maybe first, if you could discuss your assumptions behind a stabilizing base business in 2026? And my second question is on the livestock business that also drove the Q4 beat. Can you discuss your outlook by species? And in particular, how long do you expect favorable cattle producer economics to last thank you.
Unidentified Company Representative
Yeah, so on the base business, Navann, really right in line with what we committed back at Investor Day. So we're seeing low single digit to high single digit trend really since the last three quarters. We expect that as we move forward. It's going to -- it will pivot a bit quarter-by-quarter, but the basket of innovation is working and bringing in some of our base products.
Jeffrey Simmons - President, Chief Executive Officer, Director
And Navann, just real quick. I mean, great protein markets, as I mentioned, I think you're seeing US projection 5%. These protein trends are real. Farm Animal is going to be a big contributor, I think, to the animal health growth we see in the next decade.
If I break it down, cattle and beef, the low-supply, high-demand profitable markets. There is starting to make that turn on the rebuilding of the herd, but it's going to take some time. But that's advantageous for our portfolio. And then I'd just call out dairy.
Dairy ended at 4.2% growth as an industry in Q4. We're excited about this AHV acquisition, leaning in. It's going to expand our portfolio and our share of voice. Dairy is the protein to watch. And poultries had three years at 3% growth, and they're projecting the same for the fourth year in a row.
Operator
Chris Schott, JPMorgan.
Christopher Schott - Analyst
Great, thanks so much for the questions. I just want to come back to the derm market, maybe particularly on the international side. Can you just elaborate a little bit more on what you're seeing on market growth prior to your entry in the market? I'm just trying to get my hands around, are we seeing new competition accelerating the overall derm market beyond the share gains? Or is this really, again, more about share. So just any directional color there would be helpful.
And then just my second question was on the 4% to 6% guide for 2026. Just is that -- should we think about that kind of evenly balanced between pet and farm? Or is it skewed one way or the other? I'm just trying to get any directional color there thank you.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, Chris, at a high level, yes, we saw coming into the data for fourth quarter is not in yet, but double-digit growth. what we're seeing in Europe, where there's just a lot more promotion, new starts continue to be anywhere in the 10% to 20%. So -- and then you've got in the international markets, as I just mentioned, 70% of the new puppies globally are in international. So I see a lot of trends and all this increased noise about, hey, solutions to a itching dog. It's a great market backdrop, and it's great for us as well as we come with Zenrelia Globally.
Unidentified Company Representative
Yeah and then on your second one, Chris, generally speaking, I would assume it's balanced across the four quarters and generally balanced across Pat and farm throughout 2026. And again, at an Investor Day, we highlighted that farm business is generally mid-single-digit growth and then the pets probably mid-single digit plus.
Operator
And we have reached the end of our question-and-answer session. I will now turn the call back over to Jeff Simmons for closing remarks.
Jeffrey Simmons - President, Chief Executive Officer, Director
Yeah, Thank you, everybody, for your interest in Elanco, historical year in 2025, but I want everyone to be assured that Elanco is -- the engagement and the execution has never been higher in the company. We take a balanced and prudent and very disciplined approach serving our customers as we head into 2026, and we're excited to engage with you going forward.
Our priorities remain the same, and that's growth, innovation and cash, and we'll be assured that the continued delivery is our top priority for you as shareholders. Thank you for your interest in Elanco and your investment in Elanco. Look forward to working with you throughout 2026. Have a great day.
Operator
This concludes today's conference call. Thank you for your participation. You may now disconnect.