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Cat still has roundworms after drontal treatment. | Ask A Vet
 

 


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Still has roundworms.

Species: Cat
Breed: DSH
Age: 1-2 years
My 2-year-old cat, Oliver, has been having a problem with roundworms. He was born outside and I adopted him from a shelter. Now he is strictly an indoor only cat, and I keep his litter box and my home very clean.

A few months after I adopted him in January 2010, he vomited out 3 roundworms. I immediately got him a Drontal treatment (two pills within three weeks) and then brought in a stool sample and it tested negative for eggs/parasites. 3-4 months later, the same thing happened; Oliver vomited out worms, he got dewormed, and then tested negative. I cleaned his litter box with bleach and threw away all his toys he carried around in his mouth.

A week ago, Oliver vomited out roundworms again! This is the third time that this has happened. I don't understand why he keeps vomiting out worms after his stool tests negative. Could you tell me what's going on with poor Oliver? I'm not sure if I should give him Revolution for the rest of his life or keep deworming him every few months.


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Online vet, Dr. Marie

Dr. Marie replied:

A cat can still have a negative stool sample even though they have parasites. This is because some parasites like roundworms can go through a stage where they don't lay eggs.

While Drontal is a good dewormer, if this were my case I would likely be using a different dewormer (such as milbemax) every 2 weeks for about 8 treatments, and then every 3 months.

Revolution is ok for roundworms but not the greatest.


---This question was asked in our Ask A Vet For Free section.---



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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.