Fenbendazole is being tested to treat cancer patients after john Hopkins university couldn't get cancer cells to grow in mice wormed with fenbendazole . After much promise from researchers at john Hopkins the manufacturer stopped production????? What's important is these wormers seem to prevent cancer , kills fungi like giardia and candida etc , and best of all it kills worms . Maybe we all could live to be over a hundred if we just worm once a month like our pets . http://articles.baltimoresun.com/2014-05-09/health/bs-hs-pinworm-cancer-drug-20140506_1_brain-cancer-thalidomide-epo