Flea treatment for dogs in the UK: what are the options?
UK dog owners have three routes. Subscriptions post a spot-on every month for about £8.50 to £12 for a dog. Buying it yourself from a pet shop or online pharmacy costs about the same per dose. A vet practice can prescribe prescription-only (POM-V) products, which PDSA says are usually more effective than products sold without a prescription, often inside a monthly health plan. PDSA ranks the choices: a prescription product from your vet first, then an NFA-VPS product supplied by a vet, pharmacist or suitably qualified person (SQP), with shelf products last (PDSA, checked 21 October 2026). The subscriptions here send AVM-GSL and NFA-VPS products only. If you are worried about fleas, worms or your dog's skin, contact your vet.
What is actually in the box
Itch Flea and VetBox Combo both contain fipronil and (S)-methoprene, the same active ingredients as Frontline Plus, which kill fleas and ticks and stop flea eggs developing. Protect My Pet sends Frontline Plus, Advantage (imidacloprid, which does not treat ticks), or the equivalents Fleascreen and Imidaflea. The dog wormers named, Anthelmin Plus and Drontal Plus, contain praziquantel, pyrantel and febantel, which treat roundworm and tapeworm.
On the Veterinary Medicines Directorate's database on 21 October 2026: Itch Flea, VetBox Combo, Frontline Plus and Imidaflea are AVM-GSL (sold anywhere); Anthelmin, Drontal Plus and Itch's cat wormer are NFA-VPS; Advantage is AVM-GSL or NFA-VPS depending on the pack. We could not find Fleascreen by that name on the database.
How often should you flea a dog?
Follow the label of the product you use. The fipronil spot-ons these services send are applied once a month, and Itch says one dose a month is all a dog needs, which is why every box here arrives monthly. PDSA advises treating every dog, cat and rabbit in the home at the same time, as regularly as your vet recommends, all year round, because fleas are seen year-round in warm homes. It also notes that 50 fleas on a dog means about 1,000 in the home, so treat bedding and vacuum often. For worms, PDSA says every one to three months is usually enough for an adult dog, and more often for puppies (PDSA: worms in dogs).
Lungworm: the gap in every subscription
Lungworm is spread by slugs and snails, and PDSA calls it a growing problem in the UK that can be fatal. None of these subscriptions claims to cover it. The products licensed against lungworm are prescription-only (POM-V), so they can only come from your vet or with a vet's prescription. If your dog eats slugs, snails or grass, ask your vet whether you need one.
Is Itch flea treatment any good?
Itch Flea is fipronil and (S)-methoprene, AVM-GSL on the VMD database, so it is the same type of treatment as Frontline Plus rather than a stronger one. On 21 October 2026 Itch charged £9.50 a month for a 10–20 kg dog, £114 a year, against £103.56 for Frontline Plus bought in 3-packs. You pay about £10 a year more for monthly letterbox delivery and reminders. Itch does not cover lungworm. Our Itch flea review covers its wormer plans, terms and customer reviews in detail.
Subscription or buy it yourself?
On 21 October 2026, VioVet listed Frontline Plus in packs of three at these prices. A 6-pack was cheaper per dose on a promotion that VioVet said ends on 27 October 2026, so we used the 3-pack prices.
Frontline Plus 3-packs at VioVet, checked 21 October 2026. Cost per year is 12 doses.| Size | 3-pack | Per dose | Per year |
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| Small dog (2–10 kg) | £24.99 | £8.33 | £99.96 |
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| Medium dog (10–20 kg) | £25.89 | £8.63 | £103.56 |
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| Large dog (20–40 kg) | £26.99 | £9.00 | £107.96 |
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| Extra large dog (40–60 kg) | £27.49 | £9.16 | £109.96 |
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| Cat | £17.99 | £6.00 | £71.96 |
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That puts one-off buying within about £1 a month of the subscriptions (VioVet listing). A subscription is worth it if reminders and letterbox delivery mean you treat on time every month. Flea and worm treatment is one of the regular costs in our cost of owning a dog guide.
How much is flea treatment for dogs at the vet?
Vet practices rarely publish a per-dose price, but many bundle parasite treatment into a monthly health plan. Vets4Pets Complete Care costs £16.99 a month for a cat, £19.99 for a dog under 25 kg and £23.99 over 25 kg (£239.88 a year for a 20 kg dog), with a 12-month minimum term and a £60 fee for cancelling within it. That includes vet-prescribed flea, tick and worm protection, yearly vaccinations and check-up, two consultations and three nurse checks (Vets4Pets, checked 21 October 2026). Plans can include lungworm cover that subscriptions cannot send. Compare that with our dog vaccination cost guide, and see health plans versus pet insurance for what each pays for.
Travelling abroad with your dog
A subscription wormer does not meet the travel rule. To bring a dog into Great Britain, a vet must give a tapeworm treatment containing praziquantel (or an equivalent) between 24 hours and 5 days before you arrive, and record it in the pet passport or health certificate. Dogs coming directly from Ireland, Northern Ireland, Finland, Malta or Norway are exempt (GOV.UK, checked 21 October 2026). Our pet travel abroad guide covers the rest of the paperwork.
How to choose
Check the weight band your dog falls into, because prices step up with size. Look at what triggers a charge: Itch charges for a box already dispatched when you cancel, and Protect My Pet needs you to cancel by midnight the day before billing. If you already buy tails.com food, its add-on arrives with your deliveries; it cannot be bought on its own. For wider health costs, see our average vet bill guide, and for routine care, our dog health hub.