The form of glutathione, how its delivered, and what complementary ingredients are included all affect whether the supplement reaches your cells intact

Product Facts Product Facts Ingredients: Purified (deionized) water, Aloe barbadensis (aloe vera) leaf gel, vegetable glycerin, Prunus amygdalus dulcis (sweet almond) oil, extra virgin Cocos nucifera (coconut) oil, Simmondsia chinensis (jojoba) seed oil, glyceryl stearate, cetyl alcohol, stearic acid, beeswax, Theobroma cacao (cocoa) seed butter, Setria glutathione [as L-glutathione (oxidized)], phenoxyethanol, d-panthenol (vitamin B-5), allantoin, vitamin E (as d-alpha tocopheryl acetate), soy lecithin, potassium hydroxide, xanthan gum, Origanum vulgare (oregano) leaf extract, Thymus vulgaris (thyme) leaf extract, Cinnamomum zeylanicum (cinnamon) bark extract, Rosmarinus officinalis (rosemary) leaf extract, Lavandula angustifolia (lavender) flower extract, Citrus medica limonum (lemon) peel extract, Mentha piperita (peppermint) leaf extract, Olea europaea (olive) leaf extract
Canat A, Atilla D, Torres-Padilla M
Even strenuous exercise can temporarily reduce cellular glutathione below optimal
Tavor et al., Correlation between CXCR4 and homing or engraftment of acute myelogenous leukemia