Cats taking NexGard Combo should be at least 8 weeks old and weigh at least 1.8 pounds. Dosing is based on the cat’s weight.

Dogs and puppies should be at least 8 weeks old and weigh at least 4 pounds (1.8 kilograms) to use either NexGard or NexGard Plus. NexGard Combo is a liquid that you apply to your cat’s skin ...