Serotonin precursor: 5htp is a precursor of the inhibitory neurotransmitter, serotonin. It crosses the blood brain barrier more readily than its close "relative, " tryptophan, and is effective in smaller doses than tryptophan. 50 mg of 5htp act as an antidepressant, when taken during the day--and 200 mg of 5htp at bedtime help to induce sleep.
Answered 12/7/2017
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