A member asked:

Is 5 htp or l-tyrosine effective for depression and anxiety?

4 doctors weighed in across 2 answers
Dr. Glen Elliott answered

Specializes in Child Psychiatry

Probably not: This has been studied, and 5-htp, the precursor for serotonin, is sold in healthfood stores for this purpose. The idea is to flood the body and brain with precursor to increase serotonin (or with tyrosine, norepinephrine), having the same effect as getting an antidepressant. Problem is, you flood the whole body, not just specific parts of the brain, so lots of se not much specific benefits.

Answered 1/5/2019

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Dr. Ward Dean answered

Specializes in Holistic Medicine

Yes and No: 5htp is a precursor to the inhibitory neurotransmitter serotonin. L-tyrosine is a precursor to the stimulatory neurotransmitters Epinephrine and norepinephrine. Both 5htp and l-tyrosine have been shown to help with depression by different mechanisms. However, l-tyrosine may make anxiety worse, and should not be taken if anxiety is a problem.

Answered 4/27/2019

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