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 bodys 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
This potent serum harnesses the antioxidant benefits of glutathione and the
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Studies have documented effects on the gut-brain axis and potential benefits for intestinal permeability issues often referred to as leaky gut syndrome
## Availability Status: March 2026 - **FDA status:** Phase 3 clinical trials ongoing - **Expected approval timeline:** Potentially 2026-2027 - **Brand availability:** None yet - **Current access:** Compounding pharmacies (503A/503B) with valid prescription For a detailed breakdown of [retatrutide's FDA approval status and projected timeline](/guides/retatrutide-fda-approval-2026-timeline-status), see our dedicated tracker the date brand pricing becomes available depends directly on when retatrutide clears FDA review