Since last Friday, Dec. 29, y wife has been prescribed Flagyl 4x daily as well as Tetracycline 4x daily for H. Pylori (?/Spelling). On Thursday, Jan. 4 she shall undergo an endoscopy to see if the blood she has vomited is from a stomach ulcer. She is experiencing stomach upset. I myself have used Flagyl for Cryptosporidium (Sp?), and vividly remember the feeling, which is cold comfort for her. Any suggestions about food?