Glutathione (GSH)

L-Glutathione · Master Antioxidant Tripeptide

Research use onlyGBP reference pricing where listedUK dispatch on catalogue items

Overview

Glutathione is the body's master antioxidant, a tripeptide produced naturally by the liver. It protects cells against free radicals, peroxides, and heavy metals while eliminating toxins including drugs and pollutants. Injectable glutathione bypasses gastrointestinal breakdown for bioavailability compared to oral…

Glutathione acts as the primary intracellular antioxidant, directly neutralizing reactive oxygen species and regenerating other antioxidants like vitamins C and E. It plays crucial roles in detoxification by conjugating with toxins for elimination, supports immune function through T-cell regulation, protects…

Primary cellular antioxidant that neutralizes free radicals and protects against oxidative damage.

Binds and facilitates elimination of heavy metals and environmental toxins.

Essential for hepatic detoxification pathways and liver protection.

Mechanism

Primary cellular antioxidant that neutralizes free radicals and protects against oxidative damage.

Research areas

Glutathione is the body's master antioxidant, a tripeptide produced naturally by the liver. It protects cells against free radicals, peroxides, and heavy metals while eliminating toxins including drugs and pollutants. Injectable glutathione bypasses gastrointestinal breakdown for bioavailability compared to oral…
Glutathione acts as the primary intracellular antioxidant, directly neutralizing reactive oxygen species and regenerating other antioxidants like vitamins C and E. It plays crucial roles in detoxification by conjugating with toxins for elimination, supports immune function through T-cell regulation, protects…
Primary cellular antioxidant that neutralizes free radicals and protects against oxidative damage.
Binds and facilitates elimination of heavy metals and environmental toxins.
Essential for hepatic detoxification pathways and liver protection.

Research notes

Injection site reactions
Mild nausea (usually with higher doses)
Signs of allergic reaction (rash, difficulty breathing)
Signs of zinc deficiency
Known allergy to glutathione

Pharmacokinetics

Glutathione is the body's master antioxidant, a tripeptide produced naturally by the liver. It protects cells against free radicals, peroxides, and heavy metals while eliminating toxins including drugs and pollutants. Injectable glutathione bypasses gastrointestinal breakdown for bioavailability compared to oral…
Glutathione acts as the primary intracellular antioxidant, directly neutralizing reactive oxygen species and regenerating other antioxidants like vitamins C and E. It plays crucial roles in detoxification by conjugating with toxins for elimination, supports immune function through T-cell regulation, protects…
Binds and facilitates elimination of heavy metals and environmental toxins.

References

Questions

Why is injectable glutathione better than oral supplements?

Oral glutathione has poor bioavailability due to GI breakdown by enzymes and stomach acid, with most being destroyed before absorption. Injectable glutathione bypasses GI degradation for direct cellular uptake. IV or SubQ delivery achieves 10-100x higher bioavailable concentrations than even liposomal oral forms.

Can glutathione actually improve skin tone or is it just a myth?

Glutathione shows legitimate skin-lightening effects through melanin modulation—systematic reviews found oral glutathione at 250-500mg significantly reduced melanin index versus placebo. IV glutathione also shows effects but with variable and controversial results. It's not a myth but results vary greatly individually.

Does glutathione help with Parkinson's disease?

A double-blind pilot study found IV glutathione (1,400 mg, 3x weekly for 4 weeks) was well-tolerated in 21 Parkinson's patients with preliminary suggestions of symptomatic benefit. However, effects were modest. It's a research-supported adjunct therapy rather than a primary treatment, requiring medical supervision.

What's the difference between reduced and oxidized glutathione?

Reduced glutathione (GSH) is the active antioxidant form that neutralizes free radicals. Oxidized glutathione (GSSG) is the inactive form after neutralizing a free radical. You want reduced glutathione supplements—oxidized forms provide no antioxidant benefit. Quality products specify 'reduced' on the label.