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  • Thorne Glutathione-SR
  • Thorne Glutathione-SR



A sustained-release form of one of the body's most important antioxidant and detoxification factors.

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Glutathione-SR is a sustained-release form of glutathione that provides antioxidant support for the liver, brain, heart, lung, and eyes. It also helps the body respond to physical activity.

Glutathione is a naturally occurring antioxidant in your body, playing a crucial role in detoxification and cell protection. While research on its efficacy as a supplement is ongoing, some potential benefits of sustained-release glutathione include:

Enhanced Antioxidant Activity: By neutralizing free radicals that damage cells, it may contribute to reduced oxidative stress and potentially lower the risk of chronic diseases.

Detoxification Support: Glutathione aids in the removal of toxins from the body, potentially improving liver function and overall well-being.

Immune System Boost: Some studies suggest it may enhance immune response and help fight off infections.

Brain Health: Glutathione depletion has been linked to neurodegenerative diseases. While research is preliminary, supplementation may offer potential neuroprotective benefits.

Skin Health: Some studies suggest it may improve skin health and appearance by reducing oxidative stress and promoting collagen production.

Sustained-Release Advantage: This form releases glutathione gradually throughout the day, potentially increasing its bioavailability and effectiveness compared to regular supplements.


Thorne's Glutathione is NSF Certified for Sport®. It occurs naturally in cells and is a cofactor in dozens of enzymatic reactions involved in detoxification. As an antioxidant, glutathione directly quenches several reactive oxygen species (free radicals). The body's benefits from maintaining a normal level of glutathione include support for liver function, pulmonary function, immune function, bowel health, carbohydrate metabolism, cardiovascular health, cognitive health, and eye health.* Glutathione-SR is a breakthrough in glutathione supplementation because its sustained-release formula protects it from stomach acid and digestive enzymes, allowing for a slower release and a more steady level in the bloodstream of this essential nutrient.

Glutathione is the most abundant anti-oxidant. Since training and competition create more oxidative stress and damage, athletes have a higher need for antioxidants. Exercise longer than 60-90 minutes significantly decreases glutathione levels in the blood, so supplementing is beneficial for endurance and ultra endurance events.

The liver is the body's largest reservoir for glutathione. A potent endogenous antioxidant, glutathione is essential for the liver's phase I and phase II detoxification. However, negative lifestyle issues and adverse conditions that affect liver health can result in a decreased amount of glutathione in the liver.

Maintaining an optimal level of glutathione appears to be important for supporting cognitive function, especially during aging. The normal process of aging is associated with a decrease in glutathione activity, which can result in increased oxidative activity.* Less than an optimum level of glutathione is observed in individuals experiencing a decline in cognitive function.* Conversely, individuals who live to 100 tend to have higher glutathione activity.

Although a common mistaken belief is that glutathione is not well absorbed when it's taken orally, significant data confirms that glutathione is efficiently absorbed across the intestinal epithelium by a specific uptake system.*

Because an athlete needs to know that his or her supplements are trustworthy and compliant, every batch of an NSF Certified for Sport® product is tested for compliance with label claims and to ensure the absence of more than 200 substances banned by many major athletic organizations, including stimulants, narcotics, steroids, diuretics, beta-2 agonists, and masking agents.

  • Derived From Natural Flavors
  • Derived From Natural Colors
  • Gluten Free
  • Dairy Free
  • Soy Free



  • Allergies — This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
  • Pregnancy — If pregnant, consult your health professional before using this product.
  • Interactions — There are no known adverse interactions or contraindications at publication date.


* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.