undcrv put me onto tryptophan 2000-3000mg at night and i found it useful, although i still needed sleep meds, but i woke up after the sleep feeling good but probably the serotonin boost from it too. 5htp i have found good for mood but not much for sleep, for some reason tryptophan was better for sleep, we are all different. I have slept well the past 2 nights. cheers!!!