[1] Forms Available to Consumers People currently use four main forms: Oral reduced glutathione (GSH): capsules or tablets, 250 mg to 1,000 mg per dose Liposomal glutathione: encapsulated in phospholipid vesicles to resist gastric degradation IV glutathione: administered clinically or at infusion lounges, 600 mg to 2,400 mg per session N-acetylcysteine (NAC): a precursor that raises intracellular cysteine and thereby boosts endogenous synthesis Oral bioavailability of unencapsulated glutathione is modest
Habitual consumption of a ketogenic diet, which is high in fat (80% total kcal), very low in carbohydrate (5% total kcal), and moderate in protein (15% total kcal), augments circulating KB and enhances fat oxidation while sparing carbohydrate oxidation during endurance exercise ( From a performance point of view, the effect of exogenous KB supplementation as an ergogenic aid, especially in the acute form, is not ambiguous
Its a popular add-on for people looking to fight fatigue naturally
doi:10.4103/jcas.jcas_117_18 Reeds DN, Mohammed BS, Klein S, Boswell CB, Young VL