A member asked:

Is 5-htp and l-tyrosine the same or different?

A doctor has provided 1 answer
Dr. Ward Dean answered

Specializes in Holistic Medicine

Different: 5htp is a precursor of serotonin, an inhibitory neurotransmitter. L-tyrosine is a precursor of the dopaminergic neurotransmitters Epinephrine and norepinephrine, which are stimulatory neurotransmitters. Although both 5htp and l-tyrosine may act as anti-depressants, they act in completely different ways. 5htp is best taken at bedtime; l-tyrosine should be taken in the am or during the day.

Answered 5/9/2016



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