(sorry for my English and hello, as it's my first post)
Yes, Immunocal works by slightly increasing your glutathione level. But you can buy ANY kind of whey protein isolate - and it would work almost identical. In fact, Immunocal is purified form of such protein. You can buy it for pennies in any bodybuilders shop, as you already did. Check out for supplement with decreased lactose, there's difference between whey isolate / protein and whey, some shops sells pure whey (worthless for you) as whey isolate. And you need to take much more of it to get the same effect, as Immunocal is concentrated form of few aminoacids.
Remember to take vitamin B6. B12 and folic acid, to counter very high methionine amount in whey protein isolate.
There's lots of ways to increase glutathione
- alpha-lipoic acid raise glutathione level even twice as much as Immunocal, and cost next to nothing
- milk thistle increase glutathione levels even by 230%, while immunocal only by 20-40%. Cost almost nothing
- MSM (Methylsulfonylmethane) increase liver glutathione by umm... not sure now, around 100%, can't find study right now. Anyway, there are cases of HCV completely reversed after MSM treatment.
And generally you can use other antioxidants to decrease oxidative stress, such as vitamin E or vitamin C, it will slowly but significally increase glutathione levels in blood. Healtny eating (diet close to raw vegan) will reduce said stress too.
Hope it helps.