My dog's worm medicine failed. Can I give a different dewormer now?

Question

I gave my 2 yr old, 47# pit bull his second dose of worm medicine last week, it is not working can I get a different worm medicine and give him a dose so close to the last dose of old worm medicine. Both old and new medicine was or will be bought at pet store. Pet's info: Dog | American Staffordshire Terrier | Male | neutered | 1 year and 9 months old | 47 lbs

Andrea M. Brodie, DVM · Accepted Answer

If you find worms in his feces then your dog is really infested with worms. If the worms look like grains of rice (white or cream colored), then your dog has tape worm and normal wormers will not work. Best get the wormer from your vet. You may also want to bring a fecal sample to your vet so he can determine what kind of wormer your dog needs.

My dog's worm medicine failed. Can I give a different dewormer now?

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