All puppies are born with intestinal parasites (worms), so it is important that they begin a deworming regimen fairly early in their lives. This process usually begins at 2 weeks of age and continues until the puppy is 6 months old. After that, it is a matter of observation and maintenance.
Visit your local vet to get a prescription deworming medication since its lot to do with your pups age and weight.
Administer the first dose of medication when the puppy is 2 weeks old. Give it the same medication again at 4, 6 and 8 weeks of age.
Administer the medication once per month between the ages of 3 months and 6 months.
Get a heartworm-preventive medication that is also effective against roundworms and hookworms from your vet.