A English Bulldog or a French Bulldog puppy should be dewormed monthly. At BigBulldogs.com we use Pyrantel Pamoate at 6 weeks, 8 weeks, 11 weeks and 14 weeks. These are also the time we give puppy booster vaccinations. After that we use Ivermectin monthly for the rest of the Bulldogs life and Pyrantel Pamoate every few months. Bear in mind Pyrantel is for round worm, which is most common in puppies. There are other type of worms that I will cover later. Hope this helps.