If your puppy has worms, he will be given an appropriate medication.
The most effective medications for puppy worms are sold by prescription only.
The changes in treatment won't make any difference to prevention protocols. It is much easier and less expensive to prevent heartworm disease in your puppy. According to Dr. Wallace Graham, president of the American Heartworm Society, puppies should begin preventatives at six to eight weeks of age. For pups six months old or older that haven't been on preventative, a heartworm test should be given before starting medication and the dog tested six months later to be sure there are no parasites. Annual tests thereafter ensure your puppy stays healthy. Although some geographic regions like the southern states and Mississippi Delta region have a higher incidence of heartworms, the disease has been found in all fifty states.
There are several heartworm preventive medications available, some in chewable tablets and others combined with flea or other as a spot-on treatment. Ask your veterinarian to recommend the best option for your puppy.
Puppy worm medications and dosing? - German Shepherd Dog Forums
Are Over-the-Counter Medications Effective for Treating Puppy Worms?
Intestinal worms pose a serious threat to your puppy's health and are extremely common--98 percent of puppies are born with worms they have contracted from their mother in utero. Puppy wormer medications effectively treat worms, but it's important to administer them for long enough and at the proper intervals to kill all of the parasites.The second, third, and fourth doses of puppy wormer need to be timed to reflect the life cycle of the worm--since medicine is only effective against adult worms, time must be allowed for the eggs laid by the first generation of worms to hatch and mature. This takes about two weeks. Administer the second cycle of medication two weeks after the first, the third cycle two weeks later, and, if you want to be absolutely sure your puppy's worms are gone, a fourth cycle two weeks after that.Puppy worming medications are readily available and most are effective and quick-acting, but they can only kill adult intestinal worms--not the eggs that worms lay or newly hatched worms. For this reason, one dose of puppy wormer is not enough to completely rid your puppy of parasites. You will need to administer three or four doses over a period that will typically range from six weeks to two months.Soon after your veterinarian administers the worming medication, your dog may have worms in his stool. According to the Puppy Dog Place website, this is a sign the medication is working and removing the worms from the dog's body. If you notice a worm, you must clean it up or it could burrow into the environment and potentially re-infect your pooch. Although worms in the stool is a good sign the medication is effectively working, there could be a cause for concern if the dog has diarrhea repeatedly or passes a large amount of worms.