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Allergy & skin

Numelvi

EU brand name for ilunocitinib - the same JAK inhibitor sold as Zenrelia. Used daily for atopic dermatitis in dogs. Active ingredient: ilunocitinib.

£78.00,£112.00
Typical UK vet price per month
CMA / VetHelpDirect
£1.63
Cheapest VMD-approved online (monthly)
Last verified 2026-05-15
£1,099.00
Annual saving (net of £21 prescription fee)
Indicative, 15 kg dog

Key takeaways

  • Numelvi treats eu brand name for ilunocitinib - the same jak inhibitor sold as zenrelia. used daily for atopic dermatitis in dogs
  • Typical UK vet price £78 to £112 per month, based on observed dispensary list pricing across UK practices.
  • Cheapest VMD-approved online from around £1.63 per month, versus £2.20 at the upper end of the same six pharmacies.
  • Prescription works the same way, ask your vet for a written Numelvi prescription (capped at £21), dispense online.
  • Main side effect to watch for: vomiting, review the full list with your prescribing vet before starting or changing dose.

Live verified pricing

Just checkedLast refreshed 17 May 2026

We checked the pharmacy product page directly. Prices below are the actual per-unit list price for the variant linked, confirm on the pharmacy site before buying.

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.

Typical vet price
£78.00,£112.00/mo
indicative UK range
Cheapest online
no data
Annual saving
,
after £21 prescription fee: £0.00,£0.00

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.

No online price data yet for Numelvi at this strength. We are building the database, check back soon.

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.

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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.

Read the full prescription guide →

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.

Related reading

Track Numelvi price drops

We'll email when Numelvi drops in price at any of the pharmacies above.

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Pricing data status: indicative. Last verified 2026-05-15. Pharmacies change prices regularly, always confirm before purchase. Not medical advice.