Glutathione (GSH)
The body's master antioxidant. Technically a tripeptide but functions more like a small-molecule biohacking adjunct. Often paired with NAD+ in IV protocols.
What it actually is
Glutathione IS a tripeptide (γ-glutamyl-cysteinyl-glycine), but the biohacking and longevity scene treats it as an antioxidant adjunct rather than a 'peptide protocol' — different use case entirely from BPC-157, semaglutide, etc. Filed here for context. Cells make their own glutathione from cysteine; supplemental GSH supports the pool when oxidative stress is high.
Why peptide users come across it
The canonical pairing for IV NAD+ at every longevity clinic. Used for liver support, immune resilience, post-illness recovery, alcohol-recovery protocols, and skin-brightening (popular in Asia). Common adjunct in heavy-metal detox programs.
Mechanism
Documented dose range
Side effects
Contraindications
The Pepdex take
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