Numelvi
EU brand name for ilunocitinib - the same JAK inhibitor sold as Zenrelia. Used daily for atopic dermatitis in dogs. 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
Same Elanco product as Zenrelia, sold under the Numelvi name in some EU markets and UK practices. Available online at typically 35-45% less than vet.
Common side effects
- Vomiting
- Diarrhoea
- Lethargy
Not a complete list. Always read the patient information leaflet and speak to your vet about side effects.
Ready to switch? It takes 5 minutes.
Copy-paste email template, prescription steps and refill setup. From "I just paid too much at the vet" to "I'm saving £X every month".
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
- Numelvi vs Zenrelia - is there any clinical difference?
- No. Same molecule, same dose, same manufacturer. Pick whichever your prescription specifies and whichever is in stock cheapest online.
- Can my pharmacy substitute one for the other?
- Only if your prescription is written generically (as 'ilunocitinib') or specifies both as acceptable. Ask your vet to write it generically.
Similar medications
Track Numelvi price drops
We'll email when Numelvi drops in price at any of the pharmacies above.
Stop overpaying for Numelvi.
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.