Does anyone know a reasonable source for pure reduced glutathione powder? The only ones I've found seem to be charging an exorbitant amount compared to capsule prices, which is odd as capsules are almost always more than their bulk counterpart.
30g worth of capsules is around $20 but 50g powder is over $100.
Honestly, I would use NAC and Vitamin C to raise glutathione levels instead. You can also take whey protein and SAMe. Research by Witschi has shown that taking oral glutathione does not increase plasma glutathione levels. The reason behind this is probably because of the proteases in the GI tract breaking down glutathione before it reaches the liver.
Several other supplements are also though to increase glutathione levels including alphalipoic acid, vitamin D, milk thistle, and melatonin.