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Peptide

Oxytocin (Pitocin)

Oxytocin is a nonapeptide hormone. FDA-approved for labor induction and postpartum hemorrhage prevention. Cochrane review (61 studies, >12,000 women) confirms safety and efficacy. Reduces failure to deliver vaginally within 24h (8.4% vs 53.8% vs expectant management, RR 0.16). Standard of care for third stage of labor. Dosing: 0.5-20 mU/min IV for induction, 10 IU IM for PPH prevention.

Research notice. This page is for education and research. Peptides may not be FDA-approved for human use and may only be legally available for research. Talk to a qualified clinician before considering any peptide.

Best evidence
Grade A
Conditions studied
1
Outcomes
8
Graded outcomes
4031

Evidence by condition

  • Strong
  • Moderate
  • Limited
  • Very limited

1 condition, plus general outcomes

Pregnancy and Delivery Health

Pregnancy and Delivery Health: outcomes studied for Oxytocin (Pitocin)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Postpartum Hemorrhage Prevention

Standard of care for PPH prophylaxis. High-dose protocols associated with lower PPH rates (7.6% vs 9.9%, RR 0.78).

Changes; see studiesLarge effect19 studies

Studies that measured postpartum hemorrhage prevention

and 9 more in the citations list

Labor Duration

Reduces induction-to-delivery interval. High-dose vs low-dose shows shorter labor with high-dose regimens.

Improves (the measure goes down)Moderate effect18 studies

Studies that measured labor duration

and 8 more in the citations list

Vaginal Delivery Success

Cochrane: 91.6% vaginal delivery within 24h vs 46.2% expectant management (RR 0.16 for failure). Effective labor induction agent.

Improves (the measure goes up)Large effect12 studies

Studies that measured vaginal delivery success

and 2 more in the citations list

Cesarean Rate

No significant difference in cesarean rates between high and low-dose protocols (~26-28%). Safe for labor management.

Improves (the measure goes down)Small effect12 studies

Studies that measured cesarean rate

and 2 more in the citations list

General

General: outcomes studied for Oxytocin (Pitocin)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Cognitive Function

4 systematic reviews and preclinical studies support this finding. Evidence includes systematic reviews/meta-analyses. Primarily preclinical evidence.

Improves (the measure goes up)Small effect11 studies

Studies that measured cognitive function

and 1 more in the citations list

Reproductive Outcomes

5 preclinical studies support this finding. Primarily preclinical evidence.

Improves (the measure goes up)Small effect11 studies

Studies that measured reproductive outcomes

and 1 more in the citations list

Depression Symptoms

3 systematic reviews and preclinical studies support this finding. Evidence includes systematic reviews/meta-analyses. Primarily preclinical evidence.

Improves (the measure goes down)Small effect9 studies

Studies that measured depression symptoms

Liver Protection

2 preclinical studies support this finding. Primarily preclinical evidence.

Improves (the measure goes up)Small effect8 studies

Studies that measured liver protection

Key findings

  • Postpartum Hemorrhage PreventionPregnancy and Delivery HealthChanges; see studies
  • Labor DurationPregnancy and Delivery HealthImproves (the measure goes down)
  • Vaginal Delivery SuccessPregnancy and Delivery HealthImproves (the measure goes up)

Studies cited

31 studies from PubMed

  1. High- vs low-dose oxytocin protocols for labor induction: a systematic review and meta-analysisAm J Obstet Gynecol MFM, 2025 · PMID 40334983
  2. Dose-response effects of exogenous oxytocin on social cognition: A systematic review.Neuroscience and biobehavioral reviews, 2025 · PMID 40882784
  3. Oxytocin Neuropeptide in the Control of Drug Dependence: A Review of Past Studies and Future Challenges.The European journal of neuroscience, 2025 · PMID 40639928
  4. Oxytocin: physiology, pharmacology, and clinical application for labor managementJ Midwifery Womens Health, 2023 · PMID 37460365
  5. OxytocinStatPearls, 2023 · PMID 29939625
  6. Induction of labor and risk of postpartum hemorrhage in women with vaginal delivery: A propensity score analysisAm J Obstet Gynecol, 2023 · PMID 37568268
  7. Maternal and newborn plasma oxytocin levels in response to maternal synthetic oxytocin administration during labour, birth and postpartum - a systematic review with implications for the function of the oxytocinergic system.BMC pregnancy and childbirth, 2023 · PMID 36864410
  8. Intravenous oxytocin alone for cervical ripening and induction of labourCochrane Database Syst Rev, 2022 · PMID 35266542
  9. Intranasal oxytocin in the treatment of autism spectrum disorders: A multilevel meta-analysis.Neuroscience and biobehavioral reviews, 2021 · PMID 33400920
  10. Can intranasal oxytocin reduce craving in automated addictive behaviours? A systematic review.British journal of pharmacology, 2021 · PMID 34235724
  11. Oxytocin in the Male Reproductive Tract; The Therapeutic Potential of Oxytocin-Agonists and-Antagonists.Frontiers in endocrinology, 2020 · PMID 33193084
  12. Oxytocin and postpartum depression: A systematic review.Psychoneuroendocrinology, 2020 · PMID 32683141
  13. Prophylactic oxytocin for the third stage of labour to prevent postpartum haemorrhageCochrane Database Syst Rev, 2019 · PMID 31032882
  14. Cervical Ripening Using Foley Balloon with or without Oxytocin: A Systematic Review and Meta-Analysis.American journal of perinatology, 2019 · PMID 30130821
  15. Oxytocin and Social Cognition.Current topics in behavioral neurosciences, 2018 · PMID 29019100
  16. Oxytocin and Eating Disorders: A Narrative Review on Emerging Findings and Perspectives.Current neuropharmacology, 2018 · PMID 29189166
  17. [Oxytocin and postpartum depression].Journal de gynecologie, obstetrique et biologie de la reproduction, 2016 · PMID 27312097
  18. Oxytocin Protects Hippocampal Memory and Plasticity from Uncontrollable Stress.Scientific reports, 2015 · PMID 26688325
  19. High-dose versus low-dose oxytocin infusion regimens for induction of labour at termCochrane Database Syst Rev, 2014 · PMID 25300173
  20. Oxytocin and postpartum depression: delivering on what's known and what's not.Brain research, 2014 · PMID 24239932
  21. Dose and duration of oxytocin to prevent postpartum hemorrhage: a reviewAm J Perinatol, 2012 · PMID 23208766
  22. Oxytocin for labour and caesarean delivery: implications for the anaesthesiologist.Current opinion in anaesthesiology, 2011 · PMID 21415725
  23. Oxytocin involvement in SSRI-induced delayed ejaculation: a review of animal studies.The journal of sexual medicine, 2007 · PMID 17233773
  24. Effects of oxytocin outside pregnancy.Hormone research, 2003 · PMID 14646403
  25. A randomized controlled trial of oxytocin administered at the end of the second stage of labor versus oxytocin administered at the end of the third stage of laborObstet Gynecol, 2002 · PMID 12179676
  26. Oxytocin and its receptor in pregnancy and parturition: current concepts and clinical implications.Obstetrics and gynecology, 1997 · PMID 9166360
  27. Central oxytocin and reproductive behaviours.Reviews of reproduction, 1997 · PMID 9414463
  28. Induction of labour: a randomised clinical trial of amniotomy versus amniotomy with oxytocin infusionBr J Obstet Gynaecol, 1996 · PMID 8605125
  29. A randomized trial of 30-min and 15-min oxytocin infusion regimen for induction of labor at term in women of low parityAm J Obstet Gynecol, 1994 · PMID 8096473
  30. Active management of labor and high-dose oxytocin: results of a randomized clinical trialAm J Obstet Gynecol, 1992 · PMID 19160210
  31. Ovarian oxytocin and the maternal recognition of pregnancy.Journal of reproduction and fertility, 1986 · PMID 3009801