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For research and educational purposes only. Not intended for human consumption.

Oxytocin

Extensively Studied
Updated Dec 2025

Neurohypophysial Peptide | Social Bonding & Reproductive Hormone

InjectableNasalOral
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10-20 units (obstetric)
As clinically indicated
Injectable
IV infusion (primary) or IM (postpartum)
Single use (clinical)
Typical duration
2-8°C
Refrigerated

Overview

What is Oxytocin?

Oxytocin is a nine-amino-acid peptide hormone and neuropeptide naturally produced in the hypothalamus. Known as the 'love hormone' or 'bonding hormone,' it plays fundamental roles in social bonding, trust, empathy, sexual reproduction, childbirth, and lactation. FDA-approved for labor induction and postpartum hemorrhage control.

Key Benefits

FDA-approved for labor induction and postpartum hemorrhage control, precise dosing via IV infusion, immediate onset, well-established safety profile.

Mechanism of Action

Binds to oxytocin receptors (OXTR) on uterine smooth muscle cells, triggering calcium influx and myometrial contractions. Also stimulates prostaglandin release.

Molecular Information

1,007.19 Da
Weight
9
amino acids
Cyclic nonapeptide
Type
Amino Acid Sequence:
Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2
* Disulfide bridge between Cys1-Cys6 forming cyclic structure, C-terminal amidation

Pharmacokinetics

Peak
30 min
Half-life
20 min
Cleared
~1.7 hrs
100%50%0%0h6h12h18h24h
Peak
Half-life
Cleared
FDA Pitocin Label

Research Indications

Labor Induction

FDA-approved for initiation or augmentation of uterine contractions when vaginal delivery is indicated.

Postpartum Hemorrhage Prevention

FDA-approved for control of postpartum bleeding through uterine contraction stimulation.

Incomplete Abortion Management

Adjunctive therapy for management of incomplete or inevitable abortion.

Research Protocols

Disclaimer: Injectable oxytocin is used exclusively in clinical settings for labor and delivery. Must be administered only by qualified healthcare professionals. This is not for self-administration.

GoalDoseFrequencyRoute
Labor Induction0.5-2 mU/min initial, titrate to 1-2 mU/min every 30-60 minContinuous IV infusionIntravenous (diluted)
Labor Augmentation0.5-1 mU/min initial, increase graduallyContinuous IV infusionIntravenous (diluted)
Postpartum Hemorrhage Prevention10 units IM or 10-40 units in IV solutionSingle dose after placental deliveryIntramuscular or IV infusion
Postpartum Hemorrhage Treatment10-40 units in 1L IV fluidRate adjusted to control bleedingIntravenous infusion

Timing: Onset is immediate (IV) to 3-5 minutes (IM). Effects are short-lived requiring continuous infusion for labor.

Peptide Interactions

How to Reconstitute

Important: Always use bacteriostatic water (BAC). Sterile technique is essential.

1

This is a hospital/clinical procedure performed by healthcare professionals

2

Dilute oxytocin in compatible IV solution per facility protocol

3

Typical dilution: 10 units in 1000mL = 10 mU/mL

4

Use infusion pump for precise rate control

5

Monitor uterine contractions and fetal heart rate continuously

6

Adjust rate based on clinical response and safety parameters

7

Have emergency medications available (terbutaline for tocolysis)

Dosing Calculator

Calculate your injection volume with visual dosing guide

FINAL CONCENTRATION
2.50mg/mL
Each milliliter contains 2.50 mg of peptide
VISUAL REFERENCE (RESEARCH USE ONLY)

To obtain 250 mcg from this solution:

Draw 0.10 mL=10 units

(1 mL = 100 units on any insulin syringe)

0102030405060708090100
00.10.20.30.40.50.60.70.80.91.0
0.10 mL
10 units

Draw to this mark for 250 mcg

This calculator is for research purposes only. Always verify calculations and consult protocols.

Quality Indicators

FDA-approved pharmaceutical product

Use only FDA-approved oxytocin injection (Pitocin) from licensed pharmacies.

Clear, colorless solution

Oxytocin injection should be clear without particles or discoloration.

Proper packaging and labeling

Verify lot number, expiration date, and concentration.

Requires clinical setting

Injectable oxytocin should only be administered in clinical settings with proper monitoring.

Cloudy or discolored solution

Do not use if solution appears cloudy or discolored.

What to Expect

  • Used exclusively in clinical/hospital settings
  • Immediate onset of uterine contractions (IV)
  • Requires continuous monitoring of contractions and fetal heart rate
  • Effects diminish rapidly after discontinuation (short half-life ~3-5 min)
  • May cause transient blood pressure changes
  • Common side effects: nausea, vomiting, headache

Side Effects & Safety

Side Effects

  • Must be administered only by qualified healthcare professionals
  • Requires continuous electronic fetal monitoring during labor
  • Uterine hyperstimulation is the primary concern - can cause fetal distress
  • Contraindicated in certain obstetric conditions
  • Water intoxication risk with high doses or prolonged infusion
  • Have tocolytic agents available for uterine hyperstimulation

When to Stop

  • Uterine hyperstimulation
  • Fetal distress
  • Signs of water intoxication
  • Allergic reaction
  • As directed by healthcare provider

References

3 Studies

Intranasal Oxytocin for Obesity (2024)

Human RCT | N=61 | 24 IU four times daily | 8 weeks | No weight loss but improved mental health

Treatment did not result in weight loss but showed significant reduction in caloric intake and improvement in mental health quality of life.

Social Cognition in Schizophrenia (2023)

Human RCT | N=68 | 24 IU twice daily | 12 weeks | Modest social functioning improvement

While no significant advantage on primary outcomes, oxytocin showed modest improvement in social functioning.

Autism Spectrum Disorder Trial (2021)

Human Phase 2 RCT | N=290 | 48 IU daily | 24 weeks | No significant improvement in social functioning

Large RCT found intranasal oxytocin did not significantly improve social functioning in children with ASD.

Quick Start Guide

Typical Dose
10-20 units (varies by indication)
How Often
As clinically indicated under medical supervision
Where to Inject
IV infusion (primary) or IM (postpartum)
Timing
Hospital/clinical setting only
Effects Timeline
IV onset: 1-3 minutes, IM onset: 3-5 minutes, duration 30-60 minutes
Storage
Refrigerate 2-8°C, protect from light
Cycle Length
Single clinical use
Break Between
As medically indicated

Research Disclaimer

Oxytocin is sold for laboratory research purposes only and is not intended for human or animal consumption. The information provided on this page is compiled from published research, veterinary studies, and anecdotal reports for educational purposes. This content does not constitute medical advice, diagnosis, or treatment recommendations. Any research involving Oxytocin must comply with all applicable local, state, and federal regulations. BioInfinity Lab makes no claims regarding the safety or efficacy of Oxytocin for any purpose. Consult qualified professionals for any research applications.