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ORH: Sorry for the delayed response but it's the best I can do for now.
As for boosting Glutathione, I will take a holistic approach to simply boosting overall antioxidant status overall. With optimal antioxidant nutrition levels, Glutathione will be recycled or not-depleted (as is what happens with disease or aging). So, before doing specifics for increasing Glutathione, do try and meet a minimal achievement of all other antioxidants. Here is a good article from Jon Barron on the subject http://jonbarron.org/anti-aging/ultimate-antioxidant#.VUMj2Rco6M8
Now for the specifics. A list of Glutathione precursors.
--"Nondenatured" or native" whey protein products, contain bioavailable Cysteine much like NAC. OR NAC
--Methionine+B-12/Folic Acid+TMG OR SAM-e
--Selenium+Full Spectrim Vit-E+CoQ10
--Melatonin
As for Liposomal Glutathione, from personal experience, it is absolutely best when combined w/ CoQ10. This synergistic effect is science based, they simply work together very well. Will soon be trying my second order of Reduced Glutathione and CoQ10. Am eager to compare Lipo to Nebulized versions. With my bad lung condition, the Nebulized GTH seems most promising and have some evidence of prior efficacy.
Not-to-forget the best natural source for Glutathione is Wheat Sprout Concentrate which also contains Catalase, Methionine Reductase, Superoxide Dismutase. Sulforaphane aka Indole-3-Carbinol or D-Limonene boost both phase 1+2 P-450 Detox Enzyme System (which includes Glutathione).
