Best Flea Treatment for Dogs UK: How to Choose the Right Option
Not every flea treatment suits every dog. Compare formats, lifestyle fit, and what’s actually licensed for general sale vs prescription-only in the UK.
August 17, 2026
Free standard delivery over £50
Unbranded, secure packaging guaranteed
5% off your first order
When you sign up
Registered Veterinary Retailer
Genuine pet medicine
Moxiclear Spot-On for Dogs – Pack of 4
From Price range: £24.92 through £43.18
- Prescription Required
Moxiclear Spot-On for Dogs – Pack of 4
From Price range: £24.92 through £43.18
Prescription Only (POM-V)
Moxiclear spot-on for dogs is a broad-spectrum topical antiparasitic treatment. It treats and prevents fleas, mites, lice, and worms, including lungworm.
- Monthly spot-on, applied to the skin
- Four pipette sizes for dogs up to 40kg
- From 7 weeks of age. Pick the pipette by current weight.
- Doesn’t treat ticks or tapeworm
Treats internal and external parasites at the same time, including fleas, lice, mites, lungworm, roundworm, hookworm and whipworm.
Each box holds four pipettes, which is four monthly treatments for dogs up to 40kg.
Order Monday to Friday before 14:00pm to guarantee next
day delivery.
Please select size and quantity as shown in your prescription.
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.
- Select or register your pet
- Attach a clear image or PDF of the prescription
- 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.
Product Features
Prescription Only (POM-V)
Moxiclear spot-on for dogs is a broad-spectrum topical antiparasitic treatment. It treats and prevents fleas, mites, lice, and worms, including lungworm.
- Monthly spot-on, applied to the skin
- Four pipette sizes for dogs up to 40kg
- From 7 weeks of age. Pick the pipette by current weight.
- Doesn’t treat ticks or tapeworm
Treats internal and external parasites at the same time, including fleas, lice, mites, lungworm, roundworm, hookworm and whipworm.
Each box holds four pipettes, which is four monthly treatments for dogs up to 40kg.
Product Details
Moxiclear spot-on (imidacloprid and moxidectin)
Moxiclear for dogs is a monthly spot-on made by Norbrook.
It contains imidacloprid 100mg/ml, which spreads over the skin, and moxidectin 25mg/ml, which is absorbed into the body. It treats fleas, biting lice, ear mites, sarcoptic mange, lungworm, roundworm, hookworm and whipworm, and prevents fleas and lungworm.
Moxiclear for dogs comes in 4 strengths, in 4 sizes
- Moxiclear 40 mg + 10 mg spot-on solution for small dogs
- Moxiclear 100 mg + 25 mg spot-on solution for medium dogs
- Moxiclear 250 mg + 62.5 mg Spot-on Solution for Large Dogs
- Moxiclear 400 mg + 100 mg spot-on solution for very-large dogs
Each dose comes sealed in a single-use pipette inside a foil sachet. Each box holds four pipettes.
Doesn’t treat ticks or tapeworm. Your vet can prescribe a separate product for either.
Dogs only. Never use on cats or ferrets, or on puppies under 7 weeks.
Read the official datasheet for warnings, side effects and storage.
A valid written UK vet prescription is required, and we can only dispense the quantity it authorises.
Legal category: POM-V
Instructions
As a POM-V item, use Moxiclear as your vet directs.
Pick the pipette by your dog’s current weight.
Part the coat between the shoulder blades and apply to the skin. Dogs over 25kg: 3 or 4 spots along the top of the back, from the shoulders to the base of the tail. Let it dry.
Best applied in the evening. Avoid stroking the treated area until the fur is dry, and don’t let treated dogs sleep with you or your children.
Side effects are rare. They include vomiting and allergic reactions. Very rarely, greasy fur, itching, redness or hair loss where applied, or wobbliness and tremors if licked. Report any side effects to your vet.
Check the product datasheet for full details on safe use, and ask your vet or pharmacist if you’re unsure how to apply it.
Sizes
Moxiclear spot-on solution for dogs is available in the following sizes:
- Small dogs 40mg + 10mg (up to 4kg): 4 pipettes
- Medium dogs 100mg + 25mg (over 4kg to 10kg): 4 pipettes
- Large dogs 250mg + 62.5mg (over 10kg to 25kg): 4 pipettes
- Very large dogs 400mg + 100mg (over 25kg to 40kg): 4 pipettes
- Dogs over 40kg: combination of pipettes, as prescribed.
Key Benefits
- Treats internal and external parasites at the same time, including fleas, lice, mites, lungworm, roundworm, hookworm and whipworm
- One treatment prevents flea infestation for 4 weeks
- Prevents lungworm with 4-weekly use
- Each dose sealed in a child-resistant foil sachet
- Licensed from 7 weeks of age
Ingredients
Active ingredients
Imidacloprid 100mg per ml and moxidectin 25mg per ml.
Other ingredients
Benzyl alcohol, propylene carbonate and butylhydroxytoluene (E321).
Anyone sensitive to benzyl alcohol, imidacloprid or moxidectin should take care when applying it.
Full product information: NOAH Compendium: Moxiclear spot-on for dogs
How it works to order pet prescription medications online
Prescription required for this item. We need a valid written prescription from your vet before we can dispatch.
Legal category: POM-V
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
Latest Blogs
How Long Does Flea Treatment Take to Work?
Still seeing fleas an hour after treating? That’s normal. Vet-reviewed guide to how long flea treatments take to work and when it’s safe to reapply.
August 28, 2026
How Often Does a Dog Need Worming?
Most UK adult dogs need worming every three months — monthly if they scavenge, hunt or eat raw food. Vet-reviewed schedule by age and lifestyle.
August 28, 2026