Sorry, no here is a link that I have found that gives some information how to increase the levels as well as stating most glutahione is created by the body. I don't know how accurate this is but the rest of the site looks accurate so I'd give the link a look.
This is just from what I researched on my curiosity. I will look into this with my GI as well and suggest you contact a doctor as well for information on this though.
