Overview
Glutathione capsules contain reduced glutathione (GSH), a tripeptide composed of glutamine, cysteine, and glycine. As a master antioxidant, it neutralizes free radicals, supports detoxification pathways, and maintains cellular redox balance. The encapsulated form enhances stability and bioavailability compared to raw powder. These supplements are widely used in nutraceutical and cosmeceutical industries, particularly for skin brightening, liver health, and immune modulation. They are available in varying dosages (50–500 mg per capsule) and are often combined with vitamin C or alpha-lipoic acid for synergistic effects.
Physical and Chemical Properties
Glutathione is a water-soluble molecule with a sulfhydryl (-SH) group that confers its antioxidant activity. It is sensitive to oxidation, heat, and light, necessitating stabilized formulations in capsules. The compound decomposes at high temperatures rather than boiling. In capsule form, glutathione is typically microencapsulated or combined with excipients like maltodextrin to improve shelf life. The powder has a mild sulfurous odor and a slightly acidic taste. Its solubility in water facilitates rapid absorption in the gastrointestinal tract.
Main Applications
In the nutraceutical sector, glutathione capsules are marketed for detoxification (especially heavy metal chelation), anti-aging, and immune support. Clinically, they are studied for mitigating oxidative stress in conditions like Parkinson’s disease and non-alcoholic fatty liver disease (NAFLD). The cosmetic industry values glutathione for its tyrosinase-inhibiting properties, which reduce melanin production to lighten skin. Athletes also use it to combat exercise-induced oxidative damage. Emerging research explores its role in mitigating chemotherapy side effects.
Safety and Storage
Oral glutathione is generally safe, with rare side effects like bloating or allergic reactions at high doses (≥1,000 mg/day). Long-term safety data are limited, warranting professional guidance for chronic use. Pregnant women and individuals with asthma should exercise caution. Bulk glutathione powder and capsules require strict storage: airtight containers under refrigeration (2–8°C) with desiccants to prevent moisture absorption. Exposure to air or light degrades the active compound, reducing efficacy. Shelf life is typically 2–3 years under optimal conditions.
B2B Procurement Guide
When sourcing glutathione capsules, prioritize suppliers with GMP, ISO, or NSF certification to ensure quality. Request certificates of analysis (CoA) confirming purity (≥98%), heavy metal content (<10 ppm), and microbial limits. Opt for enteric-coated capsules if targeting enhanced absorption. Pricing varies by purity, formulation (e.g., liposomal vs. standard), and order volume. Spot prices for pharmaceutical-grade glutathione range from $50–$150/kg, while retail-ready capsules cost $0.10–$0.50 per unit. Consider MOQs and lead times, especially for customized formulations.
Related Manufacturers
- 主营：出口硬胶囊代加工、口服液、药食同源产品代加工、功能性食品源头工厂
- 主营：棒棒糖、饴软糖、压片糖、软胶囊、宝塔糖、甘草片、醋蛋液、黑芝麻、燕麦片、红果粉、磷虾油、大豆肽粉、凝胶糖果、早餐豆浆、电解质水、酥性饼干、酵素软糖、莲子茯苓、冰淇淋粉、防弹咖啡、冲泡饮品、固体饮料、富铁软糖、乳清蛋白粉、黑咖啡糖果