2000 mg of glutathione -2000 Dietary Supplement 120 Vegetarian Capsules Is 2000 mg of Glutathione

(2016) in the Journal of Cosmetic Dermatology tested GHK-Cu in nanocarrier formulations on facial volunteers

Phytopathology 112, 452459

Side effects may occur in the initial stage of supplementation as the body takes some time to adjust to the dose

Jarrow Formulas Glutathione Reduced delivers 500 mg of reduced L-glutathione per veggie capsule with a minimal excipient list: hydroxypropyl methylcellulose capsule, microcrystalline cellulose, magnesium stearate (vegetable source), and silicon dioxide

The brand also makes a Restore PM supplement that combines glutathione with other ingredients like GABA, 5-HTP, apigenin, and melatonin