THE LANDMARK TRIAL PENN STATE, 6 MONTHS, PEER-REVIEWED: A 6-month randomized, double-blind, placebo-controlled human trial of 54 adults at Penn State University (Richie et al., European Journal of Nutrition, 2015) found that oral Setria L-Glutathione at 250 mg/day produced significant increases in whole-blood glutathione levels at 1, 3, and 6 months versus baseline establishing for the first time that oral glutathione is bioavailable in humans
Any one of these sites can effectively absorb the medication, so the best place to inject it is whichever one is the easiest and most comfortable for you
van Zuuren EJ, Fedorowicz Z, Carter B, van der Linden MM, Charland L
doi:10.1016/0196-9781(86)90148-8 Kato N, Honda Y, Ebihara S, Naruse H, Takahashi Y
Plioplys and coworkers demonstrated lower levels of serum total Carnitine, free Carnitine, and Acetylcarnitine compared to healthy controls, and the lower level correlated with the more severe disease and ME/CFS patients