I had started taking apricot pits a few weeks ago. ?I started slowly and worked up to 40 pits a day plus B17 capusles. ?I recently experienced blurry vision, vertigo and felt disoriented. ?I immediately looked up symptoms for Cyanide poisoning symptoms and I had those so I quit the apricot pits. ?I now just take 2 B17 capsules a day. ?I may work up to more apricot pits but wonder how many is too many and how few are too few to have any good effect on my colon tumor??