Start killing fleas and ticks on your dog in 5 minutes with the fastest flea and tick topical available.1 From The Makers of CAPSTAR (nitenpyram), NextStar Flea & Tick Topical for Dogs formula, previously sold by vets, is available online and in stores without a prescription. Reapply monthly for year-round protection against fleas, ticks, chewing lice, flea eggs, flea larvae, and flea pupae.