Swanson Tryptophan 500 mg 60 capsules.

Swanson L-Tryptophan 500 mg provides pure free-form L-Tryptophan, an essential amino acid found in food that is a precursor to serotonin and melatonin.

It provides a gentler and more gradual effect than a direct 5-HTP supplement, working through the body's own conversion pathways.

Take 1–2 capsules in the evening, away from protein-rich foods. Suitable for adults looking for sleep cycle support. 60 capsules per bottle.