Storage Stability
Mechanism of Action
ROS Neutralization
Glutathione donates electrons to neutralize free radicals, superoxide, and hydrogen peroxide. The oxidized form (GSSG) is then recycled back to GSH by glutathione reductase, requiring NADPH as a cofactor.Phase II Detoxification
Glutathione S-transferases (GSTs) conjugate GSH to electrophilic xenobiotics (drugs, toxins, environmental chemicals), making them water-soluble for renal excretion. This is the primary liver detoxification mechanism for many compounds.Immune Support
Intracellular GSH is essential for T-cell proliferation and NK cell function. GSH depletion in lymphocytes impairs immune response. HIV, aging, and chronic disease all deplete GSH levels.Skin Brightening
GSH inhibits tyrosinase, the rate-limiting enzyme in melanin synthesis, and shifts melanogenesis from eumelanin (dark) to phaeomelanin (lighter pigment). This accounts for its use in skin-lightening protocols.Research Summary
Parkinson's Disease
IV glutathione (600–1,200 mg 3x/week) improves motor function in Parkinson's disease in open-label studies. Mechanism involves protection of dopaminergic neurons from oxidative stress.Skin Brightening
Multiple RCTs (primarily from Southeast Asia) confirm oral glutathione (500 mg/day for 4–12 weeks) produces measurable skin lightening via tyrosinase inhibition.Athletic Recovery
Oral supplementation (500–1,000 mg/day) reduces exercise-induced oxidative stress markers and improves recovery time in endurance athletes.Oral Bioavailability
Standard oral GSH has poor GI absorption. Setria (reduced L-glutathione) and liposomal formulations show significantly better plasma GSH elevation in human studies.Calculate your Glutathione dose Vial strength, BAC water, exact syringe draw in IU. Free, no signup. Open Calc →
Research Protocols
IV Protocol
600–1,200 mg IV push (slow, over 10–15 min) 2–3x weekly. Often combined with vitamin C (5,000–25,000 mg IV).IM Protocol
600 mg IM once or twice weekly. Administer slowly, IM glutathione can cause local discomfort.Oral/Sublingual
500 mg/day sublingual or liposomal formulation for general antioxidant support. Take on empty stomach.NAC Alternative
N-acetylcysteine (NAC, 600 mg/day) is the most cost-effective oral glutathione precursor and raises GSH levels more reliably than direct oral GSH supplementation.Storage & Handling
lyophilized" class="wiki-gloss-link">Lyophilized glutathione powder: room temperature, dry, away from light. Reconstituted solution: use immediately or store at 2–8°C for no more than 24 hours. Glutathione oxidizes rapidly, reduced (GSH) form converts to oxidized (GSSG) on exposure to air and light.
References
- [1]Perricone C, et al. "Glutathione: a key player in autoimmunity." Autoimmun Rev, 2009.
- [2]Weschawalit S, et al. "Glutathione and skin lightening in healthy Thai females." J Dermatol Sci, 2017.
- [3]Richie JP, et al. "Randomized controlled trial of oral supplementation with L-glutathione (Setria)." Eur J Nutr, 2015.
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