Is a 500mg mebendazole tablet too much for my 5kg cat? How to dose?

Praziquantel has a very high margin of safety, so it would be perfectly fine to go a bit high on young, healthy cat. Reactions can happen with any drug even at normal doses, so if he seems off afterwards, definitely take him in for evaluation, but I would be very comfortable with you giving half a tablet.

Your cat is beautiful! Albendazole and mebendazole will also kill hook worms. Levamisole has demonstrated activity against hook worms, however a dose regimen has not been established. Can you ring your veterinarian again to ask him to prescribe a different wormer for your cat? Maybe he knows an effective dosage for Levamisole against hookworms in cats. We do not have such a dosage recommendation here as we do not use Levamisole for cats principally because of the narrow therapeutic index.

The most common dose that I could find in veterinary drug books is 20-40 mg/kg once a day. Another dose I found says that cats >5.5 kg receive 1 tablet (250 mg) every 24 hours. So for your cat, weighing 13 pounds, a dose of 250 mg once a day sounds correct. You should call your vet and double check that he/she actually wanted to use the drug twice a day.

The medication in Vermox syrup is mebendazole, which should not affect the kidneys. I would assume that the tapeworm injection was praziquantel which also should not affect the kidneys (praziquantel is not effective against roundworms).

What an adorable kitten!! Each ml of the drug contains 50mg of the pyrantel base, and the dose for pyrantel pamoate is 5mg/kg. Here is how to figure it out: Body weight in pounds divided by 2.2 gives you the body weight in kg. For example, a 12 pound cat is 5.45 kg. Then, take the kg weight and multiply it by 5 -- in the example above, the 12 pound (5.45 kg) cat would get 27.27 mg of the pyrantel. Since each ml contains 50 mg, take 27.27 and divide by 50......27.27/50 = 0.54 ml. 12 pound cat = 0.54ml 10 pound cat = 0.45ml 2 pound cat = 0.09ml Be sure to dose them again in two weeks to make sure all the worms are killed. I hope this helps!

Hello. According to the manufacturer, cats as young as 5.5 weeks tolerated doses of 5x labeled dose every 14 days. For your kitten, you are just about there. But it really takes a massive overdose to start to get concerned. But do watch for signs of overdose including salivation, vomiting & depression. If you see any of these signs in the next hour or so, & they do not clear up within a few hours, or the kitten really seems significantly affected, do seek veterinary attention. Hopefully, the kitten will be just fine by tomorrow. Thanks for contacting Petco Pet Education Center, formerly Petcoach.

Nothing special just treat at 5mg/kg (1lb=0,45kg) once. Pyrantel is usually given as a single dose that is repeated in two to three weeks to kill any parasites that have matured during that time. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.