

When flea eggs or larvae are not being treated, it often takes much longer to rid a cat and the home environment of fleas. If Capstar alone was used to treat for fleas, all the eggs laid and larvae that exist on a cat or in the home environment would develop into adults days or a couple weeks later.
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Practically, a single dose of Capstar is often used in a veterinary office if fleas are seen on a cat, so that all the adult fleas can be killed and the risk of any jumping to other patients in the hospital is reduced, keeping any potential spread of fleas in a clinic or hospital isolated.Ĭapstar also makes it easier to bathe and clean a cat with a bad flea infestation, when all of the adult fleas are dead.Īlso Read: How To Get Rid Of Fleas On Your CatĬapstar is only effective for about 24 hours, making it not the best choice for eliminating a full flea infestation, because it is very short-acting and has no effect on eggs or larvae. Reportedly, it has a 99% kill rate for adult fleas within 3 to 6 hours of being given.Ĭapstar is most often used as a fast-acting way of killing adult fleas on a kitty to provide some immediate relief from their biting, prevent adults from jumping over to other pets, and stop egg-laying and perpetuation of the flea life cycle.

However, it is considered very safe to use and starts working within 30 minutes. When nitenpyram blocks acetylcholine’s function, this leads to paralysis and death of the flea.Ĭapstar kind of gets the ball rolling on treating a cat for fleas, but it only kills adult fleas and has no effect on flea eggs or larvae. When the medication enters a flea’s circulation after it bites a treated cat, the drug binds to receptors in the flea called nicotinic acetylcholine receptors.Īcetylcholine is a neurotransmitter responsible for many functions including muscle movement and central nervous systemic function. Nitenpyram is in the class of neonicotinoid insecticides.

Shelf life is reported to be 3 years if stored below 25 degrees C (76 degrees F) About Capstar For CatsĬapstar is a brand name for the active ingredient nitenpyram, which is an oral insecticide medication that targets only adult fleas.
