Glutathione: Benefits and Supplements The best glutathione supplement is the one that works for your body. Sounds simple, doesn't it? But regular, run of the mill oral glutathione is only absorbed by the body at about 3 5% Glutathione SR & Reviews Thorne Best Glutathione Supplement: What's Your Best Option? GoodRx Amazon.com: Reduced Glutathione Supplement with Milk Thistle 500 mg per Serving Pure L Glutathione with Alpha Lipoic Acid & Milk Thistle Silymarin 30 Count : Health & Household