Tags: Chemical Compound, Chemical Substance.
Tetrahydroharmine (THH) is a fluorescent indole alkaloid that occurs in the tropical liana species Banisteriopsis caapi. THH weakly inhibits serotonin reuptake.Two other harmala alkaloids in B. caapi harmaline and harmine are reversible inhibitors of monoamine oxidase A. Tetrahydroharmine however does not inhibit monoamine oxidase A.