Apparently taking direct glutathione is not the way to effectively raise glutathione. It doesn't work that way and can be problematic in metal toxic people according to Andy.

It is better to take antioxidant support and proper diet to enable glutathione in your own body to increase. To add to what Sregan has passed onto you. these too help --> Vitamin C, selenium, milk thistle, undenatured whey protein powder etc are some of these that aid this process.

I know NAC helps this too, but some react to this very badly, like cystein and methionine. Sulfur amino acids can mobilise metals too much in some people and cause adverse reactions. It just depends on how much you personally can take.