5-hydroxy-Nω-methyl Tryptamine is a metabolite of serotonin (5-HT; ) in humans that has also been found in plants. It is an agonist of the 5-HT receptor subtype 5-HT7 (IC50 = 23 pM in a radioligand binding assay). 5-hydroxy-Nω-methyl Tryptamine increases intracellular cyclic AMP production in HEK293 cells expressing 5-HT7 (EC50 = 22 nM). It inhibits serotonin uptake in HEK293 cells expressing human serotonin transporters (IC50 = 490 nM). Elevated levels of urinary 5-hydroxy-Nω-methyl tryptamine have been found in patients with schizophrenia, depression, and epilepsy.
