@squilliam60 I am a veterinarian and used Ivermectin for many years on my patients. It is used to control parasites and has potential for dose related side effects in all the animals it is approved for. It would not be safe to experiment with this drug as a potential cancer treatment because of someone's anecdotal experience. Stick with the drugs that are known to work for bladder cancer. My husband has and is clear of cancer now.