I doubt very much that COQ10 will do anything for tape worms except make them
happier. COQ10 is an antioxidant which helps in keeping your arteries
clean.
If you wish to rid yourself of tape worms or any other parasite take dichotomous earth,
it's cheap and extremely effective. Get the food grade or you could cause
yourself some problems. It is openly sold by veterinarians for deworming
animals, but humans are animals too and it is just as effect for us. It
also travels into the blood stream. If you don't like the dichotomous earth
then get yourself some horsetail because it is also very high in silica.
Take significant amounts of the dichotomous earth - a tablespoon or more at a
time, at least twice a day. Just mix it with water - it is
tasteless. It also promotes healthy hair, nails, and strong bones.