---
title: "How Often Should I Worm My Dog UK?"
description: "UK dog worming schedule — puppies, adults, lungworm, fleas and why shop wormers fail. Use our free cadence checker, then confirm products with your vet."
url: "https://pethealth.org.uk/health/how-often-should-i-worm-my-dog-uk"
canonical: "https://pethealth.org.uk/health/how-often-should-i-worm-my-dog-uk"
date_published: "2026-07-19"
date_modified: "2026-08-13"
source: "PETHEALTH+"
---

# How Often Should I Worm My Dog UK?

Most UK adult dogs need **[worming](/glossary/worming) every one to three months** — monthly if they hunt, eat raw food, or live with young children. Puppies need treatment **every two weeks from two weeks old**. Use **vet-prescribed products** that cover lungworm. Start with our free worming schedule checker, then confirm products with your vet.

## Puppy worming schedule

Puppies acquire roundworms from their mother before birth and through milk. UK charity and ESCCAP-style schedules look like this:

| Age | Frequency |
|-----|-----------|
| **From 2 weeks** | Every 2 weeks until 12 weeks |
| **3–6 months** | Monthly |
| **From 6 months** | Adult schedule |

Underdosing as they grow is a common reason treatment fails. Weigh them and use a product licensed for that weight. Ask your vet which wormers are safe alongside puppy vaccines.

## Adult dog schedule

Most healthy adult dogs: **every 1–3 months**.

**Monthly worming is the usual starting point if they:**

- Hunt, scavenge or eat faeces
- Eat raw meat or offal
- Live with young children or immunocompromised people
- Live where lungworm is a known local problem
- Visit kennels, daycare or lots of parks with slug and snail exposure

Your vet adjusts frequency from lifestyle and local prevalence — not from a calendar app alone. Use the [worming schedule checker](/worming-schedule) to see which band you fall into, then book the product conversation.

## Lungworm — do not forget

[Lungworm in dogs](/health/lungworm-in-dogs-uk) (*Angiostrongylus vasorum*) is spread by slugs, snails and frogs. It has spread across much of England, Wales and Scotland. Not all wormers cover it.

Many UK vets recommend **monthly lungworm prevention** as well as intestinal cover. Coughing, bleeding disorders, or a dog that is “just not right” after slug weather is a vet visit, not an extra supermarket tablet.

Heartworm is a different parasite and is not endemic in UK dogs the way lungworm is — see [heartworm vs lungworm](/health/heartworm-vs-lungworm-dogs-uk) if you are reading imported US advice.

## Worms affecting UK dogs

| Worm | How dogs get it | Notes |
|------|-----------------|-------|
| **Roundworm** | Mother, environment, prey | Common in puppies; zoonotic eggs |
| **Tapeworm** | Fleas, raw meat, scavenging | Flea control is part of prevention |
| **Hookworm** | Environment, skin contact | More common in kennels |
| **Lungworm** | Slugs, snails, frogs | Potentially fatal; monthly prevention often advised |
| **Whipworm** | Environment | Persistent in soil |

Scooting is often anal glands, not worms — see [why is my dog scooting?](/health/why-is-my-dog-scooting). Visible rice-like segments usually mean tapeworm and fleas together. Treat both.

## Why vet-prescribed products matter

Supermarket wormers may:

- Use older, narrower active ingredients
- Not cover lungworm or tapeworm
- Be easy to underdose for your dog's current weight

Your vet prescribes **licensed products** matched to weight, age and local risk. That is the BVA position on choosing parasite treatments for the individual animal, not a one-size box from the aisle.

Year-round [flea and tick prevention](/health/fleas-and-ticks-in-pets) sits beside worming. Fleas carry tapeworm; skipping fleas undoes a tidy worming plan.

## When to ask your vet

- Starting a new puppy on a schedule
- Scooting, diarrhoea, a pot belly, or worms you can see
- You do not know if the current product covers lungworm
- A household member is immunocompromised
- You feed raw or your dog hunts

Faecal tests can help in some cases, but a single negative sample does not mean “never worm”. Preventive cover is still the UK default for most pet dogs.

## How to use the PETHEALTH+ checker

The [worming schedule checker](/worming-schedule) asks species, age and lifestyle (hunter, raw-fed, young children at home, lungworm risk). It returns a **cadence**, not a brand. Take that print-out or screenshot to your vet and ask whether the product you already use covers lungworm and tapeworm at the current weight.

Raw-fed and scavenging dogs ingest more parasite stages. Homes with toddlers have a zoonotic reason to stay on a tight roundworm plan — *Toxocara* eggs are the concern, not a visible worm in the garden.

If you move house, travel in the UK, or start using a new park with slugs after rain, ask whether lungworm advice has changed. Cover is about **this dog, this postcode, this year**, not a forum schedule from 2018. Reweigh before every dose — a growing puppy or a dog that has gained over winter is easy to underdose. Pair the worming date with flea day so the household rhythm is one calendar, not two forgotten boxes. Ask at the next booster whether lungworm cover is still right for where you walk.

## FAQs

### How often should I worm my adult dog?

Most adult dogs need worming every one to three months depending on lifestyle. Dogs that hunt, eat raw food, or live with young children may need monthly treatment. Follow your vet's recommendation.

### When should puppies be wormed?

From two weeks of age, every two weeks until twelve weeks, then monthly until six months. Puppies can acquire roundworms from their mother before birth.

### Do I need lungworm prevention?

Lungworm (Angiostrongylus vasorum) has spread across much of the UK. Vets now recommend monthly lungworm prevention for many UK dogs — ask your vet about local risk.

### Can I buy dog wormers from a supermarket?

Some products are sold over the counter, but many are less effective or do not cover lungworm. Your vet can prescribe licensed products matched to your dog's needs and local parasite risks.

### Is there a PETHEALTH+ tool for this?

Yes. The free worming schedule checker asks species, age and lifestyle, then suggests a cadence from PDSA, Blue Cross, BVA and ESCCAP UK guidance. It is not a prescription.

## Sources

- [PDSA — Worms in dogs](https://www.pdsa.org.uk/pet-help-and-advice/pet-health-hub)
- [Blue Cross — Worming your dog](https://www.bluecross.org.uk/pet-advice)
- [BVA — Parasite treatments](https://www.bva.co.uk)
- [ESCCAP UK — Parasite control guidelines](https://www.esccap.org.uk)

Canonical HTML: https://pethealth.org.uk/health/how-often-should-i-worm-my-dog-uk
Last modified: 2026-08-13