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Related Experiment Videos

Tyrosine for depression.

A J Gelenberg, J D Wojcik, C J Gibson

    Journal of Psychiatric Research
    |January 1, 1982
    PubMed
    Summary

    Tyrosine, a precursor to norepinephrine, shows promise for treating depression by potentially boosting brain neurotransmitter activity. Further research is underway comparing tyrosine to imipramine and placebo in major depression patients.

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    Area of Science:

    • Neuroscience
    • Psychiatry
    • Biochemistry

    Background:

    • The catecholamine hypothesis suggests depression is linked to low norepinephrine activity.
    • Tyrosine is a precursor to catecholamines, including norepinephrine.
    • Oral tyrosine may increase brain norepinephrine levels and activity.

    Purpose of the Study:

    • To investigate the efficacy of tyrosine in treating major depression.
    • To compare tyrosine's effects against a standard antidepressant and placebo.

    Main Methods:

    • Preliminary trials of oral tyrosine in depressed outpatients were conducted.
    • A double-blind, parallel-group trial is currently comparing tyrosine, imipramine, and placebo.
    • Participants are non-bipolar outpatients diagnosed with major depression.

    Main Results:

    • Initial results from tyrosine trials in depressed outpatients are encouraging.
    • Further data from the ongoing double-blind trial are pending.

    Conclusions:

    • Tyrosine supplementation may represent a novel therapeutic approach for major depression.
    • Ongoing clinical trials will provide more definitive evidence on tyrosine's efficacy.

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