Capstar(nitenpyram) for Dogs Fast-Acting Oral Flea Treatment for Dogs 2-25 lbs, Vet-Recommended Medication Tablets Start Killing in 30 Minutes, 6 DosesFast Acting Flea Treatment: CAPSTAR (nitenpyram) starts killing adult fleas in just 30 minutes Tackle Flea Infestations Fast: With one dose of CAPSTAR, you can watch the dead fleas fall off your pet Treat Reinfestations Fast: If your pet gets reinfested with fleas, simply give another dose as often as once a day No Prescription Needed: Fast, effective flea treatment for dogs that's available over the counter Intended Use: CAPSTAR Oral Flea Treatment