Research Reference
Glutathione 1500mg
Higher-strength endogenous antioxidant tripeptide reference
Research & educational purposes only. BioMaxFit does not sell, promote, or represent peptides in any way. We are strictly educational and recommend working with your doctor on anything health-related. The information below comes from published research and documents what has been studied, not what should be done. Many of these compounds are investigational and not approved by the FDA; possession or use outside an authorized clinical trial may be illegal in your jurisdiction. This is not medical advice.
Glutathione (GSH) is a small endogenous tripeptide composed of glutamate, cysteine, and glycine. It is one of the most abundant intracellular antioxidants in the human body and plays a central role in redox homeostasis, detoxification, and immune function. The 1500mg strength refers to a higher-concentration compounded preparation referenced in clinical, aesthetic, and integrative wellness literature.
Endogenous glutathione is synthesized primarily in the liver and exists in reduced (GSH) and oxidized (GSSG) forms. The ratio between the two is used as a marker of cellular oxidative stress. Levels decline with age, stress, poor nutrition, and certain disease states, which has driven research interest in exogenous glutathione supplementation.
The 1500mg preparation is referenced in higher-dose intravenous and wellness protocols, often in aesthetic skin-brightening, liver-support, and antioxidant regimens. As with the 600mg preparation, clinical evidence for specific outcomes remains limited.
Dosing Reference
Reconstitution
Add 10 mL bacteriostatic water to the 1500 mg vial. Resulting concentration: 150 mg/mL.
| Dose | Syringe Units | mL Volume | Schedule |
|---|---|---|---|
| 1500 mg | 1000 units | 10 mL | SubQ, weeklyStandard antioxidant protocol |
| 750 mg | 500 units | 5 mL | SubQ, 2x weeklyDivided-dose protocol |
Math assumes U-100 insulin syringes (1 mL = 100 units). Verify your syringe matches before use. Round half-units to the nearest visible mark.
Reconstitution
Glutathione is supplied as a compounded lyophilized vial for subcutaneous use. Compounded research-peptide forms are not FDA-approved.
For a 1500 mg vial reconstituted with 10 mL bacteriostatic water, the concentration is 150 mg/mL; a 1500 mg dose draws to 100 units (1 mL) on a U-100 syringe. Gently swirl — do not shake — and store refrigerated. Compounded forms are not FDA-approved.
Cycling Protocol
Community protocols describe glutathione administered subcutaneously once weekly (or divided into twice-weekly smaller doses) for 4–8 weeks, sometimes continued as ongoing antioxidant support. No standardized cycle is established; compounded glutathione is not FDA-approved.
Routes of Administration
Subcutaneous injection: Administered into the abdomen or thigh, once weekly or divided. Compounded forms are not FDA-approved.
Stacking Protocols
| Stack | Components | Purpose | | --- | --- | --- | | High-Dose Antioxidant + Vitamin C | Glutathione 1500mg IV + high-dose Vitamin C (IV) | Combined high-dose antioxidant infusion common in integrative protocols | | Skin-Brightening Protocol | Glutathione 1500mg IV + NAC (oral) | NAC supports endogenous glutathione synthesis | | Liver Support | Glutathione 1500mg IV + Milk Thistle / NAC | Detoxification and hepatoprotection regimens |
Community integrative protocols describe spacing glutathione infusions from other IV compounds and introducing one variable at a time to assess individual response.
Side Effects & Safety
Reported effects in the research literature include:
- Gastrointestinal discomfort when taken orally, including bloating and cramping.
- Allergic or hypersensitivity reactions in rare cases, particularly with intravenous administration; higher doses may increase this risk.
- Skin lightening or brightening effects reported in some aesthetic protocols, the mechanism and safety of which remain debated.
- Potential interference with certain chemotherapy agents, as antioxidants may reduce oxidative cytotoxicity used in some cancer treatments.
- Bronchospasm risk has been reported in rare cases of inhaled or nebulized glutathione in asthmatic patients.
- Higher single doses may increase the likelihood of transient flushing, headache, or injection-site reaction depending on route.
Oral glutathione is poorly bioavailable because it is degraded by digestive enzymes; this has driven interest in intravenous, sublingual, and liposomal delivery routes, each with its own safety considerations.
Research Basis
The evidence base for exogenous glutathione is mixed and route-dependent:
- Oral supplementation studies have produced inconsistent results on whether circulating glutathione levels meaningfully rise, owing to degradation in the gastrointestinal tract.
- Intravenous administration reliably raises blood levels, but clinical outcome studies remain limited in size and duration.
- Skin-brightening claims are supported by small studies and extensive anecdotal use, particularly in Southeast Asian aesthetic medicine, but large randomized controlled trials are lacking.
- Antioxidant and detoxification roles are well-established biochemically, but translating this into measurable clinical benefit for specific conditions remains an active research area.
- Dose-response data for higher-strength preparations (such as 1500mg) is sparse; most published studies examine lower or variable doses.
Glutathione is not FDA-approved for the treatment of any disease in the United States. Its use in aesthetic and wellness settings is off-label and largely unregulated. BioMaxFit does not sell, promote, or recommend glutathione or any preparation of it.