Weight and Dosage 6-12 lb: 1 small tab 12.1-25 lb: 2 small tabs 25.1-50 lb: 1 large tab 50.1-100 lb: 2 large tabs 100.1-150 lb: 3 large tabs 150.1 - 200 lb: 4 large tabs You should weigh your dog to make sure you are giving the right dose. Sentry® HC Worm X Plus® Flavored Chewables are palatable if offered by hand. If your dog does not voluntarily eat the chewable, you can hide the chewable in a small amount of food or place it in the back of the dog's mouth for forced swallowing. Make sure that the dog eats the complete dose. Watch the dog for a few minutes after dosing to make sure the chewable is not rejected.