For Puppies weighing 2.5kg and less, at least 6 weeks of age. For Kittens weighing 2.5kg or less, at least 8 weeks of age. Veterinarians' #1 Choice for Protection Against Fleas and HeartwormsYour patients deserve safe, proven protection. Your clients deserve a preventive that's easy to administer and that they can trust. REVOLUTION (selamectin) scratches both those items off your list of concerns.5IN1 PROTECTION PROVIDES PEACE OF MINDProtects againstfleas, heartworms, roundworms, hookworms and ear mites.*EASY TO ADMINISTER:Monthly topical application that dries quickly.FLEA AND HEARTWORM PROTECTION:Kills adult fleas and prevents flea eggs from hatching.*Protects against heartworms*that lead to heartworm disease and heartwormassociated respiratory disease (HARD).SAFE FOR THE FAMILY AND OTHER PETS:No separation period required after administration. REVOLUTION is safe in breeding, pregnant, lactating, and heartwormpositive cats and kittens 8 weeks and olderPrecaution:Do not use REVOLUTION on sick, weak, or underweight cats. Use only on cats 8 weeks and older. Side effects may include digestive upset and temporary hair loss at the application site with possible inflammation. In people, REVOLUTION may be irritating to skin and eyes. Wash hands after use. See full Prescribing Information.*REVOLUTION protects cats against fleas (Ctenocephalides felis), heartworms (Dirofilaria immitis), roundworms (Toxocara cati), hookworms (Ancylostoma tubaeforme) and ear mites (Otodectes cynotis).