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Zenrelia Film-Coated Tablets for Dogs
From Price range: £0.77 through £120.29

Zenrelia Film-Coated Tablets for Dogs

From Price range: £0.77 through £120.29

A once-daily tablet to relieve itching, redness, and inflammation caused by allergic or atopic dermatitis in dogs 12 months and older.

  • Fast-acting formula
  • Targets the source of the itch 
  • Easy dosing 
  • Improves comfort &  sleep quality 
  • For canine use only 

Order Monday to Friday before 14:00pm to guarantee next
day delivery.

Ordering Prescription-Only Products

This item requires a current prescription from your vet before we can dispatch it. The good news? Sorting it out is simple and only takes a moment.

  1. Select or register your pet
  2. Attach a clear image or PDF of the prescription
  3. Complete your order at checkout

As soon as your prescription reaches us, our team will verify the details and get your pet’s treatment posted out to you.

Order Monday to Friday before 14:00pm to guarantee next
day delivery.

A registered RCVS Vet Practice (7615389)

Product Features

A once-daily tablet to relieve itching, redness, and inflammation caused by allergic or atopic dermatitis in dogs 12 months and older.

  • Fast-acting formula
  • Targets the source of the itch 
  • Easy dosing 
  • Improves comfort &  sleep quality 
  • For canine use only 

Product Details

⚠️ This product will be dispatched once a valid prescription is provided and verified by our licensed veterinarian.

Zenrelia: Targeted Relief for Canine Dermatitis

Zenrelia Tablets for Dogs are prescribed to treat severe itching (pruritus) caused by allergic dermatitis in dogs and to manage the uncomfortable flare-ups associated with atopic dermatitis. Zenrelia contains ilunocitinib, which works by selectively blocking Janus Kinase (JAK) enzymes, specifically JAK1, which are responsible for sending itch signals to the brain. By interrupting these pathways, it reduces the urge to scratch and calms skin redness without the systemic side effects of steroids.

Available Zenrelia Tablet Strengths:

  • Zenrelia 4.8mg
  • 6.4mg
  • 8.5mg
  • 15mg
Available for purchase as a single tablet.

Warnings:

Do not use:
  • In dogs with evidence of immune suppression
  • In dogs with progressive malignant neoplasia (cancer)
  • In dogs with known hypersensitivity to ilunocitinib or any of the excipients
  • In dogs under 12 months of age
  • In breeding, pregnant, or lactating dogs
Use with caution in dogs with a history of recurrent infections. The use of live vaccines during treatment should be discussed with your veterinarian.

Instructions

Administer only as directed by your prescribing vet. The complete clinical datasheet is available below for your reference. 

Clinical Guidance: Access the full product datasheet here for essential safety and administration information. 

Sizes

  • Pack of 30 Film-Coated Tablets
  • Pack of 90 Film-Coated Tablets

Key Benefits

Ingredients

  • Active Ingredient
    Ilunocitinib

Related Products

How it works to order pet prescription medications online

Choose your
treatment

Select the treatment you would like to order

Upload a prescription copy at
the checkout

Provide all the information about your pet

Express
Delivery

Your order will be sent in discreet packaging.

Frequently asked questions

How fast does Zenrelia work for dogs?
Zenrelia tablet works fast. You will likely notice your dog itching less within just 4 hours of their first pill. Within 24 hours, it fully calms the redness and scratching, making it one of the quickest treatments available.
What are the side effects of Zenrelia for dogs?
The most common side effects are a mild upset stomach, such as temporary vomiting or diarrhoea. Because the medicine works by calming the immune system, your vet will want to do regular check-ups to make sure your dog stays healthy and infection-free over time.
Where can I buy Zenrelia and how much does it cost?
You can buy Zenrelia for dogs safely online at Ashcroft 4 Pets by uploading your vet's prescription. The total price depends on your dog's weight, which tells us exactly what size tablet they need (from 4.8mg up to 15mg). We offer fast, tracked delivery across the UK.

Do I need a prescription to buy POM-V pet medicines online?

Yes. POM-V items require a valid prescription from your UK vet.

 Upload your prescription during checkout. 

Photos must be clear. If details are wrong or expired, orders can’t be processed. This is standard across UK pet pharmacies.

No. Under UK law, vets must provide a written prescription if you request one for a POM-V medicine. They may charge a reasonable fee for issuing it, but they cannot refuse. This allows you to choose where to buy your pet’s medication, whether directly from your vet or from a registered UK pharmacy such as Ashcroft 4 Pets.

In the UK, most POM-V prescriptions are valid for 6 months, unless your vet specifies a shorter duration. Prescriptions for Schedule 2 or 3 controlled medicines are usually valid for 28 days and are not repeatable. At Ashcroft 4 Pets, we follow these same UK veterinary guidelines to ensure your pet’s medication is dispensed safely and legally.

At Ashcroft 4 Pets, we are a fully VMD-registered and accredited online retailer. This means every prescription and over-the-counter pet medicine we supply is safe, genuine, and dispensed according to UK law.

We follow all Veterinary Medicines Directorate (VMD) rules, and our team checks every prescription carefully before processing. You can order with confidence, knowing your pet’s health is in the hands of experts and all medicines are traceable, legally supplied, and authentic.

In the UK, most repeat prescriptions for POM-V medicines are valid for up to 6 months from the date your vet issues them. You can order multiple times within this period if your vet has authorised repeats.

For controlled medicines (Schedule 2 or 3), the prescription is valid for 28 days only and cannot be repeated. These medicines are strictly regulated due to their potential for misuse.

At Ashcroft 4 Pets, we follow UK law carefully, ensuring all prescriptions are dispensed safely, legally, and in the exact amounts prescribed.

 If your vet prescribes a human medicine for your pet under the Cascade, we can usually dispense against that prescription (with the right checks).

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