exogenous glutathione Schematic diagram showing plant cellular metabolism, Reduced Glutathione Complex

A separate clinical trial showed an oral dose of 15 mg/kg body weight of GSH to increase plasma levels by 1.5 to 10 times compared to baseline

Sun M, Zigman S

And fortunately, there are a few signs you can look for: Fatigue and lethargy Excessive tiredness A general of energy Unexplained joint and muscle pain Brain fog and lack of mental clarity Getting sick often (low immunity) Difficulty getting to sleep Poor sleep quality While each of these will not definitively indicate you are glutathione deficient, they indicate you very well could be

Berberine inhibits growth of liver cancer cells by suppressing glutamine uptake