[frodo8sam]

Melatonin is just for jetlag/otherwise shifted sleeping schedule, are people using it as an anti aging drug?

[chasil]

Melatonin is always made from serotonin.

Serotonin is made from tryptophan, which can also be made into niacin.

Taking tryptophan and niacin as a supplement will boost both serotonin and melatonin naturally, assuming these pathways are working properly.

However, this can be dangerous in the presence of an SSRI.