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Allergy & skin

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.

£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

  • Zenrelia treats daily jak inhibitor for atopic dermatitis in dogs. same drug class as apoquel. aims to control itching and skin inflammation within hours
  • 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 £2.58 at the upper end of the same six pharmacies.
  • Prescription works the same way, ask your vet for a written Zenrelia 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.

  • Pet Drugs Online
    Zenrelia Film-Coated Tablets for Dogs 4.8mg
    £1.06per unit
    Visit pharmacy →

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 Zenrelia at this strength. We are building the database, check back soon.

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.

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".

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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

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.

Related reading

Track Zenrelia price drops

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