Take the hassle out of flea infestations! Get rid of fleas fast with CapGuardT (nitenpyram). Compare to Capstar (nitenpyram), same active ingredient used in the vet channel. CapGuard is an oral flea control medication available over-the-counter to consumers like you. This easy-to-dose tablet begins working within 30 minutes. It cuts out the mess and does exactly what you need it to do: kills fleas fast! Give this effective and hassle-free product a try! Available for dogs over 25lbs, or for dogs and cats 2-25 lbs. Capstar is a registered trademark of Novartis.