Antioxidant

The body's master intracellular antioxidant tripeptide, used to support redox balance, detoxification, and skin, with mixed clinical evidence for supplementation.

A glutathione precursor that is FDA-approved as a mucolytic and antidote for acetaminophen overdose, and studied more broadly in psychiatry and respiratory health.

A versatile antioxidant compound studied for diabetic nerve pain and metabolic health, sold as a supplement and used as a drug in some countries.

A diet-derived antioxidant amino acid that accumulates in cells via a dedicated transporter, studied as a possible longevity nutrient.

An FDA-approved antidote for methemoglobinemia that biohackers take at low doses for mitochondrial energy and focus; the cognitive evidence is thin and it is a monoamine oxidase inhibitor with documented fatal interactions with antidepressants.

A mitochondria-targeted antioxidant registered in Russia as an eye drop for dry eye; rodent lifespan claims come from a single research group and oral systemic use has no human data.