Glutathione, often called the body’s “master” antioxidant, occurs naturally in the cells and is a cofactor in dozens of enzymatic reactions that mitigate oxidative stress. As the body’s most abundant antioxidant, glutathione directly quenches several reactive oxygen species (free radicals).

Thorne's Glutathione-SR is a breakthrough in glutathione supplementation because its sustained-release form protects it from stomach acid and digestive enzyme breakdown, allowing for a slower release and more steady level in the bloodstream of this key antioxidant. 

Because training and competition create oxidative stress and damage, athletes and active individuals have a higher need for antioxidants to replenish glutathione levels in the blood. Exercise, especially activity longer than 60 minutes, significantly decreases glutathione levels in the blood; therefore, supplementing with glutathione is recommended for individuals who are training for endurance and ultra endurance events.

Because athletes need to know their 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.

At Quinn's Apothecary Pharmacy, every product on our shelves earns its place — and choosing what we offer is personal to us. Nature does remarkable things when given quality ingredients and the right guidance, and that philosophy shaped our decision to carry this product. Our pharmacists selected it for its purity, integrity, and real-world effectiveness, and they're always here to help you understand exactly how it fits into your wellness journey. At Quinn's Apothecary Pharmacy, informed, honest care isn't just a value — it's the reason this product is here.