Dog Heartworm Treatment

I am doing this three day collection of my dog’s feces to take to the vets for whipworm testing as he has the symptoms.
What is the treatment for whipworm? Pills? Shots?
If he is treated for whipworms do I need to take a day or two off to be home to take him outside constantly? Does the treatment cause frequent pooping?
I’d rather miss some pay and stay home than to come home to feces everywhere due to worming.
Thanks.