What is Glutathione?
Glutathione is a tripeptide composed of three amino acids: **Cysteine, Glutamic Acid, and Glycine**. It is produced by every cell in the human body, but the liver maintains the highest concentration. It exists in two states: GSH (reduced/active) and GSSG (oxidized/inactive).
In research settings, Glutathione is considered the "Master Antioxidant" because it not only neutralizes free radicals itself but also recycles other antioxidants like Vitamin C and Vitamin E, keeping them in their active states.
⚗️ Key Research Facts
- Molecular Composition: γ-L-Glutamyl-L-cysteinylglycine
- Primary Goal: Reducing Oxidative Stress
- Secondary Goal: Melanin Pathway Modulation
- Bioavailability (Standard Oral): < 20%
Mechanism: Neutralizing Free Radicals
The primary role of Glutathione is to act as an "electron donor." It finds unstable Reactive Oxygen Species (ROS)—free radicals caused by pollution, UV light, and metabolism—and donates an electron to neutralize them before they can damage DNA or cell membranes.
Protecting Mitochondrial DNA
Unlike many other antioxidants, Glutathione is active within the mitochondria, protecting the delicate mitochondrial DNA from the oxidative byproducts of energy production. This makes it a core subject for aging and longevity research.
Liver Health & Phase II Detox
The liver uses Glutathione in its Phase II Conjugation pathway. In this process, Glutathione binds to fat-soluble toxins, heavy metals, and metabolic waste, converting them into water-soluble compounds that the body can safely excrete through the kidneys or bile.
Skin Research: Melanin Pathways
In dermatology research, Glutathione is studied for its effect on skin tone. It is hypothesized to work through three distinct mechanisms:
Tyrosinase Inhibition
Directly inhibits the enzyme responsible for producing melanin (pigment) in the skin.
Pigment Shifting
Shifts the body's melanin production from the dark eumelanin to the lighter, red-yellow pheomelanin.
Research Protocols & Dosing
- Administration: Intramuscular (IM) or slow Intravenous (IV) injection.
- Standard Research Dose: 200 mg to 600 mg per administration.
- Frequency: Typically administered 1–3 times per week.
- Storage: Keep refrigerated. Protect from direct sunlight.
Frequently Asked Questions
Does it lighten skin permanently?
Research suggests that any lightening effects are transient and depend on maintained levels of Glutathione. If supplementation stops, the body's natural melanin production will eventually return to its genetic baseline.
Is oral Glutathione effective?
Standard oral Glutathione is largely destroyed by an enzyme called gamma-glutamyl transpeptidase in the gut. Liposomal oral versions are more effective, but injectable formats remain the "gold standard" for research requiring rapid systemic saturation.
Where to buy Injectable Glutathione in Canada?
Nūmira Peptides offers high-purity injectable Glutathione for research and laboratory purposes. Shop Glutathione →
