Side Effects of Panacur for Puppies

Puppy image by Ludmila Galchenkova from

Dogs commonly develop various kinds of intestinal parasites, or worms, in their lives. Most puppies are born with worms and should be treated for them as soon as they are weaned. Panacur, made by InterVet in the U.K., is a safe and effective treatment for worms in adult dogs and puppies with no severe side effects.


Panacur is an anthelmintic that treats both adult and immature roundworms and tapeworms in the gastrointestinal tracts of animals, according to Medic Animal. It may also be helpful in treating a lungworm called Oslerus osleri.

Treatment For Worms

If you suspect your dog has worms, have it diagnosed by a veterinarian. Different types of worm infestations require different treatments. Panacur is effective in killing roundworms but only the Taenia species of tapeworms, according to

Side Effects

While some deworming medications have strong side effects, Panacur is safe for use in puppies 6 weeks or older, pregnant females and all adult dogs. It has only one mild side effect. says studies have shown that three out of 240 dogs experienced vomiting after taking Panacur. If vomiting occurs, have your dog seen by a veterinarian to rule out any other underlying problems that may be causing the vomiting.


Before giving your dog Panacur, you should have your puppy weighed so you know the proper dosage it should receive . A puppy or dog that weighs 4.54kg. should be given 1 gram of panacur mixed in with a small amount of its typical food. A 9.07kg. dog should be given 2 grams, and a 13.6kg. dog should be given 3 grams. The daily dosage should be repeated for three days. Panacur also comes in the form of chewable tablets and a paste for younger puppies and horses.

Puppies should be on a worming schedule every six, eight, 10 and 12 weeks. Dogs older than 6 months should be given Panacur twice a year to prevent reinfestation of the worms.

Veterinarian Mike Richards at recommends that a monthly roundworm medication be given to keep roundworms under control.

This medication should not be given to any puppy or adulat dog that is sick.