& Prendergast, G
Lower concentrations (0.5-1%) work for general scalp maintenance
Studies that used 1 mg/day in oral and intravenous trials did not show meaningfully better outcomes than lower doses, and higher doses were associated with more reports of headache, diarrhea, and gastrointestinal effects
Bentley AR, Emrani P, Cassano PA: Genetic variation and gene expression in antioxidant related enzymes and risk of COPD: a systematic review
Many Indian vegetarians rely on paneer, dal, and legumes instead, which supply some sulphur-containing amino acids but generally less than an egg- or meat-heavy diet
Forstrom JW, Zakowski JJ, Tappel AL (1978) Identification of the catalytic site of rat liver glutathione peroxidase as selenocysteine