Have you searched back in time to see if this has been discussed before? I think it has, and NAG form of glutamine comes to mind. I think you just follow the manufacturer's guidelines on the bottle. I've tried it but didn't notice any particular benefit myself, but I think there are others who have used it more.
New stuff: GERD, Recurrent cystitis/Overactive bladder
Lifelong stuff: Food allergies/intolerance, eczema, asthma