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Study · Measured the body's own peptide · 2015

2 results

Effects of acute doses of prosocial drugs methamphetamine and alcohol on plasma oxytocin levels.

Bershad AK, Kirkpatrick MG, Seiden JA, de Wit H

Journal of clinical psychopharmacology1 Jun 2015Cited by 23 (Europe PMC)

PMID25853370 (opens in a new tab)PMCIDPMC4414800 (opens in a new tab)DOI10.1097/jcp.0000000000000314 (opens in a new tab)PepBankPUB-25853370
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Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study2

No result from this study comes from a test of the peptide.

Natural levels measured2

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01HumanEndogenous levelRandomized controlled trialOther

    In healthy adults, acute methamphetamine (10 mg or 20 mg) did not increase plasma oxytocin levels versus placebo.

    In plain wordsIn healthy adults, methamphetamine did not raise the body's own oxytocin levels in blood, compared with placebo.

    Peptide
    Oxytocin
    Outcome
    No significant changePlasma oxytocin after methamphetamine
    Study

    n = 11

    Comparator
    Placebo
    Outcome group
    Hormone levels · Endocrine and hormones

    Source sentences

    Summary
    Both methamphetamine and alcohol produced their expected physiological and subjective effects, but neither of these drugs increased plasma oxytocin levels.
    1 context sentence
    Summary · context
    In study 1, 11 healthy adult volunteers attended 3 sessions during which they received methamphetamine (10 mg or 20 mg) or placebo under double-blind conditions.

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelNon-randomized trialOther

    In healthy adults, an alcohol beverage (0.8 g/kg) did not increase plasma oxytocin levels versus a placebo beverage.

    In plain wordsIn healthy adults, alcohol did not raise the body's own oxytocin levels in blood, compared with a placebo drink.

    Peptide
    Oxytocin
    Outcome
    No significant changePlasma oxytocin after alcohol
    Study

    n = 8

    Comparator
    Placebo
    Outcome group
    Hormone levels · Endocrine and hormones

    Source sentences

    Summary
    Both methamphetamine and alcohol produced their expected physiological and subjective effects, but neither of these drugs increased plasma oxytocin levels.
    1 context sentence
    Summary · context
    In study 2, 8 healthy adult volunteers attended a single session during which they received 1 beverage containing placebo, and then a beverage containing alcohol (0.8 g/kg).

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    11 Oct 2026, 01:30 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:49 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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