More Than 2 Million Dogs Reach for Zen: Elanco Helps Veterinarians and Pet Owners Navigate Extended Allergy Season With Zenrelia(TM) (Ilunocitinib Tablets)
Key Highlights
- ➤Zenrelia treated more than 2 million dogs across 48 countries worldwide
- ➤Zenrelia launched in September 2024 and achieved 99% U.S. veterinarian prescribing loyalty
- ➤Freeze-free fall seasons lengthened 11 days on average across U.S. cities
- ➤Zenrelia carries a boxed warning requiring vaccination-related treatment interruptions
Expert Statements
Jennifer Miller, Veterinarian and dermatology medical strategy lead at Elanco
“Pet owners and veterinarians need to be on high-alert and look for signs of allergic and atopic dermatitis, given that allergy season will be longer this year.”
Jennifer Miller, Veterinarian and dermatology medical strategy lead at Elanco
“Itching, scratching, chewing, biting, even smelly skin are all signs that a dog's immune system could be overreacting to environmental allergens.”
Sarah Peton, Regional Consulting Veterinarian at Elanco
“In Toledo, we've seen the fall allergy season stretch later and later, and our exam rooms reflect it. More dogs are coming in scratching, licking and chewing well into the fall, and owners are exhausted from watching their pets struggle.”
Sarah Peton, Regional Consulting Veterinarian at Elanco
“Zenrelia has given us a once-daily option that helps get these dogs comfortable again, which makes a real difference for both the patient and the family at home.”
Jennifer Miller, Veterinarian and dermatology medical strategy lead at Elanco
“Freddie's case is an example of how persistent itching can eventually break down both the pet and owner's quality of life.”
Jennifer Miller, Veterinarian and dermatology medical strategy lead at Elanco
“Zenrelia offers veterinarians a critical tool for their toolbox and is an important addition to Elanco's dermatology portfolio.”
INDIANAPOLIS, IN / ACCESS Newswire / October 14, 2026 / Allergy season is getting longer, leaving people and their pets with more pollen-filled, itchy days ahead. A new Climate Central report shows that the "freeze-free" fall season-September through November- lengthened by an average of 11 days from 1970 to 2025, and by two weeks or more in about a third of U.S. cities studied.(i) For dogs with allergic itch, a longer season can mean more time spent itching and scratching. Elanco's Zenrelia (ilunocitinib tablets) has already treated more than 2 million dogs(iii) in 48 countries worldwide including the U.S., EU, United Kingdom, Brazil, Canada, Australia and Japan. With allergy season not stopping just yet, Elanco is encouraging veterinarians and pet owners to be on the lookout for itchy dogs and work together to find itch relief.
"Pet owners and veterinarians need to be on high-alert and look for signs of allergic and atopic dermatitis, given that allergy season will be longer this year," said Dr. Jennifer Miller, veterinarian and dermatology medical strategy lead at Elanco. "Itching, scratching, chewing, biting, even smelly skin are all signs that a dog's immune system could be overreacting to environmental allergens."
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