Glutathione is real biochemistry: a tripeptide central to cellular redox, with pooled human data on its levels. The cosmetic use has been assessed systematically, and injectable skin-lightening carries safety concerns that the marketing rarely mentions. Oral supplementation has randomized trials with modest findings.

Glutathione

Glutathione is real biochemistry: a tripeptide central to cellular redox, with pooled human data on its levels. The cosmetic use has been assessed...

About:

A tripeptide antioxidant present in all human cells, sold as an injectable and oral supplement.

WellnessVial or oral

What does this peptide do?

Supported by randomised human trials. Research focuses on antioxidant.

Antioxidant research

A tripeptide antioxidant present in all human cells.

Evidence grade

Highest evidence grade among the graded claims: A. Grades reflect study strength, not benefit.

What are the benefits and side effects of this peptide

What research says it may help with

Glutathione is real biochemistry: a tripeptide central to cellular redox, with pooled human data on its levels.
Oral supplementation has randomized trials with modest findings.

Who should avoid it

People who are pregnant or breastfeeding
Children and adolescents
People considering intravenous use outside clinical supervision, given reported safety concerns
Known hypersensitivity to peptide preparations

See the safety section. Absence of a flag is not evidence of safety.

A grade reflects evidence strength, not a recommendation to use this compound; a strong grade can attach to a harmful effect.