Flea Treatment For Puppies 4 Weeks Old. Flea treatments for puppies 8 to 13 weeks of age and older if your puppy is at least 8 weeks old you have even more options. Oral medications such as comfortis active ingredient spinosad are only safe from 14 weeks of age onwards.

According to veterinarian and akc family dog columnist jeff grognet capstar is safe to give to puppies as young as four weeks old and a minimum of 2 pounds. This over the counter product contains an active ingredient called nitenpyram which starts working after only half hour of consumption. By doing all the above you can dramatically reduce the number of fleas in your home.
Frontline active ingredient fipronil can be used at 8 weeks and over.
Then gather a napkin and a flea comb. Fleas only live on their host 5 percent of the time. You can use the topical treatment activyl or frontline plus or save with the generic equivalent flea5x plus provided your puppy weighs at least 4 pounds. There is something you can do to get rid of those fleas that won t harm the puppies at all.