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Related Experiment Videos

DL-phenylalanine versus imipramine: a double-blind controlled study.

H Beckmann, D Athen, M Olteanu

    Archiv Fur Psychiatrie Und Nervenkrankheiten
    |July 4, 1979
    PubMed
    Summary

    DL-phenylalanine, an amino acid, shows potential antidepressant properties comparable to imipramine in a 30-day trial. While both treatments improved depression, imipramine offered temporary relief for anxiety and sleep issues.

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    Area of Science:

    • Psychiatry
    • Pharmacology
    • Neuroscience

    Background:

    • Depression is a complex mood disorder with various treatment options.
    • Amino acids and pharmaceutical agents are explored for their therapeutic effects.
    • DL-phenylalanine is an amino acid precursor to neurotransmitters implicated in mood regulation.

    Purpose of the Study:

    • To compare the efficacy of DL-phenylalanine with imipramine in treating depression.
    • To evaluate psychopathological, neurological, and somatic changes during treatment.
    • To assess the impact on specific depressive syndromes, anxiety, and sleep disturbances.

    Main Methods:

    • A double-blind, 30-day study involving 40 depressed patients.
    • Patients received either DL-phenylalanine (150-200 mg/24h) or imipramine (150-200 mg/24h).

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  • Psychopathological assessments used the AMP system, Hamilton Depression Scale, and Bf-S self-rating questionnaire.

    • Main Results:

    • No statistically significant difference was observed between DL-phenylalanine and imipramine groups on the Hamilton Depression Scale and Bf-S questionnaire.
    • Imipramine showed significantly greater reduction in anxiety ratings on days 10 and 20, and improved sleep disturbances on days 1, 5, and 10.
    • Separate analyses of somatic and retarded depressive syndromes did not reveal significant group differences.

    Conclusions:

    • DL-phenylalanine demonstrates potential antidepressant properties.
    • Imipramine provided short-term benefits for anxiety and sleep disturbances.
    • Methodological considerations necessitate careful interpretation of DL-phenylalanine's antidepressant effects.