It is not because of the ingredients
Sulfur rich foods (garlic, onions, cruciferous vegetables), high quality protein (eggs, grass fed meat, whey), selenium sources (Brazil nuts, sardines), and colorful produce rich in vitamin C all support natural glutathione synthesis
Vitamin C helps reduce oxidative stress and promotes a more even, refreshed complexion for those who are interested in skin benefits
(2) J M Monti, J Debellis, P Alterwain, T Pellejero, et al (1987) Study of delta sleep-inducing peptide efficacy in improving sleep on short-term administration to chronic insomniacs International Journal of Clinical Pharmacological Research, 1987, Volume 7 (Issue 2), Pages 105-10
Codeage Liposomal Glutathione+ supplement is vegan, non-GMO, and free from dairy, soy, and gluten