Some time ago I read that L-Glutamine was required by the gut to help healing and that it could be supplemented, and it helped lots of people with gastritis and other gut problems. I bought it in a powder form and started taking it. I've seen recommendations for people to take anything from 20g - 40g L-Glutamine powder per day. I stuck with just 5g - 10g per day though. To begin with, and for several months, it helped a lot. But then I gradually started getting worse, and had bouts of pain more severe than I ever started with, so I gave it up. I have since tried to work out what might have gone wrong. I've tried understanding the relationship between Glutamine, Glutamate & Glutathione, because I thought it might be relevant, but failed completely. My chemistry and biochemistry knowledge is a big fat zero. And of course the problem I had may be nothing to do with glutamate or glutathione, or it could be a problem with the glutamine and something else I was taking. Can anyone help with a link that explains what glutamine does in the body and what it gets converted to for people who don't have much in the way of background knowledge?