I'm so sorry to hear about your tape worm, it must be awful to experience such a disorder.
Assuming you're going to use a standard bathtub in the U.S. I would recommend at least 3 gallons. Depending on your size and weight. You have to have enough in the tub to cover your knees, most important your entire rectum. Let the milk sit until room temperature, if you use whole milk you can add a quart of hot water to 1 gallon of milk.
I'd suggest you sit for at least 30 to 45 minutes to get results. Some people have had to try this a couple of times before the worm expels. Most important try to relax, read a book or magazine.
Remember this recipe comes from the Amish, they have unlimited access to fresh milk since they have their own dairy cows.
