Hello, I Need Your Help Please My Friend Was Diagnosed

Hello,
I need your help please
My friend was diagnosed with H-pylori and yersinia she was prescribed with antibiotics 2 different one also some pills for the stomach which didnt sim to work since then we are looking for alternative treatments i came upon a few sites claiming l-glutamin and other natural products treat successfully h-pylori and candida overgrowth as well does that really work? If it does how many mg of l-glutamin must be consumed daily and for how long to successfully kill the bacteria also what other treatments are there that will work to kill yersinia and h- pylori as well as candida? Looking forward to your reply as soon as possible