Get fast flea relief for your large dog with PetArmor CapAction (nitenpyram). It contains the same ingredients as CAPSTAR (nitenpyram) and starts killing adult fleas within 30 minutes with no messy applications. One easy-to-use tablet of PetArmor CapAction for large dogs achieves greater than 90% effectiveness against adult fleas on your dog within four hours. This affordable over-the-counter oral flea tablet is your in home flea treatment solution intended for dogs 4 weeks of age and older and weighing over 25 pounds. PetArmor CapAction oral flea tablets are safe for pregnant or breeding dogs. When you need fleas gone fast, use PetArmor CapAction.