Ivermectin can be purchased on Amazon as the paste (1.87%) - I buy the apple flavored - have never used for cancer, but the IVM action time is 7 hours in the body - you could it several times a day - you cannot overdose on IVM - the dosage is to swallow about an inch of the paste. I have been using it frequently for 2.5 years for removing cysts and for virus removal. You can also research Joe Tippens fenbendazole treatment on Youtube. I've attached Joe's dosage instructions. I've used fenbendazole for parasite removal - you can also buy it on Amazon from Fenben Labs. This product works through your liver, so if I feel extra tired while taking it, I take Milk Thistle supplements, too. Nothing is a done deal until it's done - ask Joe Tippens! Best of everything to your friend! 😍