Available without a prescription, Capstar for Dogs is the only flea control product safe for puppies as young as 4 weeks and weighing at least 2 pounds. With other topical and oral flea control ...

Puppies that are at least 4 weeks old may benefit from Capstar for Dogs, a fast-acting pill that can be given daily until your puppy is old enough for a longer-lasting flea preventive. Some of the ...