Name: China Supplier High Quality Best Price L-Glutathione CAS 27025-41-8
Brand: Wuhan Fortuna Chemical Co., Ltd.

Items	Specifications	Results
Appearance	A white to off-white powder	Conforms
Identification	HPLC RT	Conforms
Clearity and color of solution	Clear and colourless	Conforms
Odor	Characterisric odor	Conforms
Loss on drying	≤ 5.0%	2.10%
Specific rotation	-96°-106°	-101.51°
Residue on ignition	≤0.1%	0.03%
Assay	GSSG:≥ 95.0% GSH:≤0.5%	GSSG:98.39% GSH:0
Purity（HPLC )	≥ 98.0%	99.17%
Fe	≤10ppm	<10ppm
Cl	≤200ppm	<200ppm
SO₄	≤300ppm	<300ppm
NH₄	≤200ppm	<200ppm
As	≤1 ppm	<1 ppm
Heavy metals (as Pb)	≤10ppm	<10ppm
Conclusion	The result conform with standard

L-Glutathione (often simply called glutathione) is a tripeptide molecule composed of three amino acids: cysteine, glutamate, and glycine. It is often referred to as the "master antioxidant" because it is one of the most crucial and potent antioxidants produced naturally within the body. Every cell in the human body contains glutathione, with particularly high concentrations in the liver, which is the central organ for detoxification.

Functions and Importance in the Body

Glutathione's roles are extensive and vital for maintaining health:

Powerful Antioxidant: It neutralizes harmful free radicals and reactive oxygen species (ROS) that cause oxidative stress and damage to cells, proteins, and DNA. This helps slow down the aging process and protects against chronic diseases.
Detoxification: It is a key component of the liver's detoxification pathways. It binds to toxins, heavy metals, and harmful chemicals, making them water-soluble so they can be excreted from the body through urine or bile.
Immune System Support: It is essential for the proper functioning of immune cells, particularly lymphocytes, helping the body fight infections and diseases effectively.
Recycling Other Antioxidants: It plays a unique role in regenerating other important antioxidants, such as Vitamin C and Vitamin E, returning them to their active states so they can continue to fight oxidative stress.
Cellular Health: It is involved in critical processes like DNA synthesis and repair, protein synthesis, and enzyme activation.

What Is It Used For? (Supplementation and Clinical Use)

While the body produces its own glutathione, levels can be depleted by factors like aging, chronic stress, poor diet, toxins, and certain diseases. Supplementation is used for:

Anti-aging and Skin Lightening: It is famously promoted for its potential to promote lighter, brighter skin by interfering with the enzyme (tyrosinase) that produces melanin. This is its most common use in over-the-counter supplements.
Supporting Liver Health: Used to support individuals with non-alcoholic fatty liver disease (NAFLD), chronic liver disease, and to protect the liver during exposure to toxins.
Supporting Immune Function: Often used by individuals with autoimmune diseases or chronic infections.
Supporting Neurological Health: Research is ongoing into its role in conditions like Parkinson's disease, where oxidative stress is a key factor.
Improving Antioxidant Status: For athletes or individuals under high physical stress to reduce muscle damage and improve recovery.

Forms of Supplementation

A major challenge with glutathione is its poor oral bioavailability—it is not easily absorbed when taken as a pill.

Oral Capsules/Tablets: The most common but least effective form due to breakdown in the digestive tract. Liposomal or sublingual forms are designed to improve absorption.
Intravenous (IV) Therapy: The most direct and effective method, often used in clinical settings to bypass the digestive system entirely.
Inhalation: Used in some studies for respiratory conditions.
Topical: Found in some creams and serums for its antioxidant and skin-brightening effects.
Precursors: Many people take precursors like N-Acetylcysteine (NAC), milk thistle (silymarin), and alpha-lipoic acid, which help the body produce more of its own glutathione.

Safety and Side Effects

Glutathione is generally considered safe for most people when taken in appropriate doses, as it is a natural substance in the body.

Common Side Effects: Are rare but can include abdominal cramps, bloating, and allergic reactions (like rash).
Important Consideration: Its ability to lighten skin is a desired effect for some but a significant ethical and health concern for others. Long-term safety for this cosmetic purpose is not fully established.
Consult a Doctor: It is crucial to consult a healthcare provider before starting supplementation, especially for individuals with asthma, certain health conditions, or those taking other medications.

In summary, L-Glutathione is an essential, internally produced molecule critical for combating oxidative stress, detoxifying the body, and supporting the immune system. While popular as a supplement for skin lightening and overall health, its effectiveness is highly dependent on the method of administration.