
The ultimate guide to deworming treatments for dogs
, by Michael van Wassem, 5 min reading time

, by Michael van Wassem, 5 min reading time
A healthy dog starts with a healthy gut. Worm infections are more common than you might think and can cause serious damage without being noticed. Worms steal nutrients, weaken the immune system and can cause a pot belly, diarrhoea or vomiting in puppies. Some types of worms can also be transmitted to humans. With a smart deworming routine, you protect not only your dog but your entire household.
In this complete guide you will discover when to deworm, how to determine the correct dosage, which brands are popular and how to combine deworming with flea and tick protection in a smart way. Want to go straight to the full range? Then view the collection deworming, fleas & ticks.
Worms live inside your dog’s body without you always seeing them. Still, they can cause significant symptoms such as a dull coat, low energy, weight loss, diarrhoea, vomiting or fluctuating appetite. In puppies the risk is extra high because they are often infected through their mother. Adult dogs can become infected through grass, soil, faeces, prey animals or by licking contaminated areas during walks.
What makes it even more important: fleas can transmit tapeworms. That is why a good strategy is almost always a total plan – regular deworming combined with consistent flea and tick protection.
The most common worms in dogs are roundworms, tapeworms, hookworms, whipworms and sometimes lungworms. Many modern deworming treatments are broad-spectrum and target multiple types at once. This is especially useful if you do not know exactly which worm is involved or if you are deworming preventively according to a schedule.
How often you deworm depends on age and risk. Puppies need a more intensive schedule, while adult dogs are usually well protected with a fixed routine. Does your dog eat raw meat, hunt mice or spend a lot of time outdoors? Then more frequent treatment may be advisable.
| Puppy age | Deworming | Practical tip |
|---|---|---|
| 2 weeks | Yes | Start early to keep worm pressure low |
| 4 weeks | Yes | Combine with good hygiene at home |
| 6 weeks | Yes | Useful around the time of (possible) rehoming |
| 8 weeks | Yes | Often at the time of first vaccinations |
| 2–6 months | Every month | Puppies explore a lot and pick up eggs more easily |
| From 6 months | Every 3 months | Switch to an adult routine |
For most adult dogs, deworming every 3 months is a reliable foundation. You can deworm more often if your dog has a higher risk, for example through raw feeding, an active outdoor lifestyle, hunting behaviour, frequent contact with many other dogs or young children in the household.
Deworming treatments are always dosed by body weight. Underdosing can lead to insufficient effect, while overdosing is unnecessary. Preferably weigh your dog just before giving the tablet. Also take growth spurts in puppies into account – they can gain weight quickly, which means the dosage changes fast.
| Dog’s weight | Example (breed/type) | Example treatment | Dosage (general principle) | When |
|---|---|---|---|---|
| 2–4 kg | Chihuahua / toy puppy | Broad-spectrum dewormer | Always according to package by weight | Puppy schedule or every 3 months |
| 5–10 kg | Maltese / Dachshund | Broad-spectrum dewormer | According to weight category | Every 3 months |
| 11–20 kg | Beagle / medium mixed breed | Broad-spectrum dewormer | According to weight category | Every 3 months |
| 21–35 kg | Labrador / Border Collie | Broad-spectrum dewormer | According to weight category | Every 3 months |
| 36+ kg | German Shepherd / large breeds | Broad-spectrum dewormer | According to weight category or combination of tablets | Every 3 months |
There are different types of deworming treatments. Some are broad-spectrum and ideal for routine use, while others are used for specific situations such as Giardia or long-term digestive problems. The choice depends on your dog, the risk and the purpose of the treatment.
If you are looking for a broad-spectrum dewormer that fits into a fixed routine, Milbemax is a popular choice. You select the correct variant based on your dog’s weight and can then easily maintain your schedule.
If your dog has persistent diarrhoea, inconsistent stools or Giardia, a course with Panacur is often used. This is usually given for several consecutive days and is therefore a different approach from the standard quarterly deworming.
Fleas can transmit tapeworms. That is why a total plan is the best approach: deworming combined with flea and tick protection. On the collection page fleas, ticks & deworming you will find everything together.
AdTab is a chewable tablet that many dogs take easily. It is a smart addition to your deworming routine because it protects your dog not only internally but also against external parasites.
Beaphar Canishield is ideal if you want a long-term solution without monthly treatments. It combines perfectly with a fixed deworming routine.
Many owners treat the dog but forget the environment. With Bolfo you combat fleas in baskets, carpets and furniture and prevent reinfestation.
Deworm every 3 months with a broad-spectrum treatment, weigh your dog regularly and combine this with consistent flea and tick protection. For specific problems, a Panacur course may be the right solution.