L-tryptophan
Also known as: tryptophan
Classification
Unknown
Regulatory Status
Overview
L-tryptophan is the dietary precursor of serotonin. A mood effect is discussed and not established as a recommendation.
Evidence and limitations
Human/preclinical evidence breakdown is not available in this record.
ClassB source cannot establish canonical regulatory or safety fields. The statements below are retained as uncertainty, not as a label-backed verdict. | Regulatory status: not-established | Warning: Serotonin-related adverse effects are a class risk | Precaution: Risk profile is not a personal clearance | Adverse effect: nausea | Adverse effect: drowsiness | Serious adverse effect: serotonin syndrome is a class risk when combined with serotonergic drugs
Pathways
Benefits
A PubMed systematic review examined L-tryptophan supplementation and mood or emotional functioning.
Interactions & cautions
Flagged in source data
These are observational flags for review, not individualized instructions.
Sources
Educational reference only — not medical advice.