This research showed that GSH supplementation of amino acids (including L-glycine) and micronutrients (including vitamin C, vitamin E, and magnesium), as well as specific dietary patterns (vegetarian, the Mediterranean diet, and the DASH diet) had the potential to raise glutathione concentrations, which in turn slowed the rate of tissue deterioration
Bibliography Best, C
Oranges, lemons, sweet limes, and citrus fruits: Rich in Vitamin C which boost the immune system and stabilize the glutathione levels of our body
Researchers have documented few side effects
However, due to random X-inactivation, there may be a wide variation of G6PD levels in heterozygous females, and so some heterozygotes are effectively G6PD-deficient while some others may not be affected
Benefits & How It Works article is a great place to continue