PP / MONOGRAPH 040 Endogenous tripeptide

Glutathione

Discovery history, preclinical evidence, human studies, current FDA context, and the questions that still need to be answered.

Evidence is not equivalence.

Research on a named molecule does not establish that a catalog material is the studied drug product. Identity, sequence, salt, formulation, purity, sterility, route, labeling, and indication can change the scientific and regulatory conclusion.

ORIGIN / HISTORY

When was Glutathione first described?

A single primary-source discovery event and individual discoverer for Glutathione were not established in this review. This name may represent a later analog, fragment, salt, proprietary formulation, blend, or catalog convention rather than one discrete discovery. The linked literature map is the starting point for a deeper historical review. [1]

PRECLINICAL EVIDENCE

What do animal and laboratory studies show?

Preclinical pharmacology may exist, but this registry does not treat animal or in-vitro findings as human outcomes. The literature map should be reviewed for the model, species, comparator, endpoint, and replication status. [1]

Translation limitCell and animal findings can generate mechanisms and safety signals, but they do not predict clinical benefit on their own.

CLINICAL EVIDENCE

Are there human studies?

Injectable/IV skin-whitening use is popular but NOT FDA-supported for efficacy/safety; oral is poorly absorbed. The available human evidence is limited, mixed, indirect, indication-specific, or not independently replicated; it should not be generalized to an unverified catalog material. [1][2]

Check the live study registry ↗

U.S. REGULATORY STATUS

Is Glutathione FDA cleared or approved?

Drug terminology: FDA generally approves drug products; “clearance” is typically a medical-device pathway.

This review does not identify an FDA-approved drug product corresponding to the catalog name Glutathione. That statement is not a legal determination and does not replace a current product-specific search of Drugs@FDA, applicable biologics databases, or jurisdiction-specific rules. [3][4]

RESEARCH OUTLOOK

Where is the scientific promise?

The scientific promise of Glutathione is a hypothesis for further testing, not a demonstrated product benefit. Useful next steps would include independent replication, validated identity and purity, dose–response and toxicology work, pharmacokinetics, prespecified endpoints, and properly registered human trials before clinical conclusions are drawn. [1][2]

LIMITATIONS / PRECAUTIONS

What should professionals keep in view?

FDA has flagged injectable skin-whitening use (unapproved; contamination and severe skin-reaction risk). [1]

Professional-use boundary

This page does not provide a diagnosis, treatment recommendation, protocol, dose, reconstitution instruction, route, or administration schedule. Any lawful program requires independent regulatory, quality, toxicology, and clinical review.

SOURCE REGISTER

References and live evidence maps

Primary papers support specific historical claims where available. PubMed and ClinicalTrials.gov links are live evidence maps, not proof that every result applies to the exact catalog material. FDA links should be rechecked because regulatory pages and product labels can change.