Dog ate chocolate?

 ask a vet

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.


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.---


Do you have a pet website? Interested in learning more about SEO for Wix?

Check out our dog age calculator and cat age calculator.

Want to receive pet coupons, vet advice and info on new pet products in your inbox?

* indicates required

We'll only send you great stuff, never spam. Unsubscribe any time.

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.

Search for similar questions:

ask a vet

Popular questions...

Needs anal glands done again. I just took Chloe to the vet last weekend because she was skooting and her vet... (9900 views)

Sick kitten We recently found this kitten last week outside, when we found him we estimated that... (11179 views)

Need spanish to be a vet? I am wishing to go into the veterinary workforce, and I would love to know if you... (14010 views)

Is my cat pregnant? we just opened our home to a female stray cat. i estimated her to be a year old or... (12057 views)

Swollen eye after removal. Hi My 16 month old male pug had his intact left globe removed 10 months ago after... (8079 views)

Cat died after surgery. my 4yr old cat had a puncture wound to the abdomen. 2 vets evaluated him. Gave him... (11746 views)

Pumpkin for anal glands. My dog has anal gland troubles, the vet mentioned fiber treats, I was wondering for... (43182 views)

Dog weak slow and shaking. My dog has become not interest in anything and has become very weak and has very... (16746 views)

Getting cat to lose weight. Dear Dr Marie, We have just adopted a fat cat, and are trying to reduce his weight.... (7517 views)

Not sure if first shots done. I just bought a 7 week old pomeranian from a local family. They told me he has had... (40245 views)

See all questions...

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.