Zenrelia
Daily JAK inhibitor for atopic dermatitis in dogs. Same drug class as Apoquel. Aims to control itching and skin inflammation within hours. Active ingredient: ilunocitinib.
See your saving over a year
Pick your dog's weight (and optionally your vet's actual quote) to see the exact monthly and annual saving. The price comparison table below sorts pharmacies by cheapest first; we never sort by commission.
Based on a 15 kg dog, recommended strength: 5 mg. Assumes 12 months of continuous use (chronic dosing) and one written prescription per year. CMA Order caps the prescription fee at £21 for the first medicine, plus £12.50 per additional medicine on the same prescription. Prices are indicative and last verified 2026-05-15. Always confirm the current price on the pharmacy site before purchase.
Why it costs more at the vet
Newer Elanco-branded JAK inhibitor, premium-priced. Online pharmacies sell the same product at 30-45% less than the average UK vet practice.
Common side effects
- Vomiting
- Diarrhoea
- Lethargy
Not a complete list. Always read the patient information leaflet and speak to your vet about side effects.
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How to get a written prescription
The CMA Order is legally binding by 23 September 2026. Every UK vet must offer a written prescription on request, with the fee capped at £21 for the first medicine plus £12.5 per additional medicine on the same prescription. Take the prescription to any VMD-approved online pharmacy listed above.
Common questions
- Is Zenrelia the same as Apoquel?
- Same drug class (JAK inhibitor) but different active ingredient. Zenrelia is once daily and was approved more recently. Your vet decides which fits the dog.
- Can I switch from Apoquel to Zenrelia?
- Only on your vet's advice. They will write the prescription, which you can fill at any VMD-approved online pharmacy.
Similar medications
Related reading
Track Zenrelia price drops
We'll email when Zenrelia drops in price at any of the pharmacies above.
Stop overpaying for Zenrelia.
Same medicine, same regulator, same vet relationship — half the price. Five-minute switch from in-clinic dispensing to a VMD-approved online pharmacy.
Pricing data status: indicative. Last verified 2026-05-15. Pharmacies change prices regularly — always confirm before purchase. Not medical advice.