Most of the studies have been done on rats, and its not clear if the benefits apply to humans
Bailey HH, Mulcahy RT, Tutsch KD, Arzoomanian RZ, Alberti D, Tombes MB, Wilding G, Pomplun M, Spriggs DR: Phase I clinical trial of intravenous L-buthionine sulfoximine and melphalan: an attempt at modulation of glutathione
The Problem With Most Oral Glutathione Supplements Glutathione is fragile, and most standard oral supplements wont survive the digestive environment
Some animal research have even suggested that glutathione may strengthen the gut barrier by reducing intestinal cell death
Melanin is synthesized within specialized structures known as melanosomes