Oxytocin
Also known as Pitocin, Syntocinon
Oxytocin is a nine-amino-acid neuropeptide hormone synthesized in the hypothalamus and released from the posterior pituitary. It has well-established roles in uterine contraction during labor and in the milk-ejection reflex during lactation, and synthetic oxytocin is an approved prescription drug for labor induction/augmentation and control of postpartum bleeding. Beyond reproductive physiology, oxytocin acts as a central neuromodulator implicated in social bonding, trust, and stress regulation, which has driven research interest in anxiety, autism spectrum conditions, and social cognition. Clinical use is almost always intravenous and physician-administered; intranasal and other routes remain primarily investigational. As a hormone with narrow acute effects, it is not comparable to self-directed longevity or performance peptides.
Reported benefits
- Induces or augments labor contractions
- Reduces postpartum hemorrhage by promoting uterine contraction
- Supports the milk-ejection reflex during lactation
- Investigated for effects on social cognition, trust, and anxiety
- Studied as an adjunct in autism spectrum research
How it works
Oxytocin binds the oxytocin receptor, a Gq-coupled GPCR expressed on uterine smooth muscle, mammary myoepithelial cells, and specific brain regions including the amygdala and hypothalamus. Receptor activation raises intracellular calcium, driving uterine smooth muscle contraction and myoepithelial contraction for milk ejection. In the central nervous system, oxytocin signaling is thought to modulate social salience and fear circuitry, though the precise behavioral mechanisms remain under active study.
Dosing ranges
| Tier | Dose | Frequency |
|---|---|---|
| Low | 0.001 IU | IU/min (1 mIU/min) IV infusion, typical starting rate for labor induction |
| Moderate | 0.006 IU | IU/min (6 mIU/min) IV infusion, common titrated maintenance rate |
| High | 0.02 IU | IU/min (20 mIU/min) IV infusion, upper typical labeled rate |
Mixing & syringe units
Reconstitution calculator
How much water to add and how many insulin-syringe units to draw for Oxytocin. Educational only.
Draw to this mark
0.1units
= 0.001 mL for a 0.01 IU dose
Concentration
5 IU/mL
Doses per vial
1,666
Under 2 units is hard to measure accurately. Use less water for a larger, easier-to-read draw.
A U-100 syringe reads 100 units per mL. This is a reconstitution math helper only, not a prescription or dosing advice. Verify every calculation and consult a qualified healthcare provider.
Possible side effects
Common protocols
Common questions
What is Oxytocin used for?
Oxytocin is a nine-amino-acid neuropeptide hormone synthesized in the hypothalamus and released from the posterior pituitary. It has well-established roles in uterine contraction during labor and in the milk-ejection reflex during lactation, and synthetic oxytocin is an approved prescription drug for labor induction/augmentation and control of postpartum bleeding. Beyond reproductive physiology, oxytocin acts as a central neuromodulator implicated in social bonding, trust, and stress regulation, which has driven research interest in anxiety, autism spectrum conditions, and social cognition. Clinical use is almost always intravenous and physician-administered; intranasal and other routes remain primarily investigational. As a hormone with narrow acute effects, it is not comparable to self-directed longevity or performance peptides. Reported benefits include induces or augments labor contractions, reduces postpartum hemorrhage by promoting uterine contraction, supports the milk-ejection reflex during lactation.
What is a typical Oxytocin dose?
Reported ranges run 0.001-0.02 IU. A low protocol is 0.001 IU iu/min (1 miu/min) iv infusion, typical starting rate for labor induction, and a high protocol is 0.02 IU iu/min (20 miu/min) iv infusion, upper typical labeled rate. This is reference information, not a dosing recommendation.
What is the half life of Oxytocin?
Approximately 1 to 5 minutes intravenously. That is what sets the dosing frequency, and it is why the timing guidance is as directed by your clinician.
How is Oxytocin administered?
Intravenous: into a vein. Also given intramuscularly for postpartum hemorrhage and studied intranasally in social/behavioral research; it is not a self-administered subcutaneous peptide.
How long is a Oxytocin cycle?
Single labor/delivery episode or short postpartum course on, followed by Not applicable; used acutely rather than in cycles off. Administered under direct medical supervision for a discrete clinical event, not self-cycled.
What are the side effects of Oxytocin?
Reported side effects include uterine hyperstimulation and fetal distress if overdosed during labor, hypotension and reflex tachycardia with rapid iv administration, water intoxication/hyponatremia with prolonged high-dose infusion, nausea and vomiting, arrhythmia risk at high infusion rates. Evidence level for this compound is well studied.
Partner offer · $20 off
When did you last
check your blood work?
Regular blood work catches changes early. At-home collection with free pickup, 50+ biomarkers, and results in 72 hours.
- 1Order your kitTakes two minutes online, $20 off with this link.
- 2Collect at homePainless draw with free home pickup, no lab visit.
- 3Results in 72 hours50+ biomarkers with clear optimal ranges.
Partner offer · opens rythm.health
Educational use only, not medical advice. This profile is provided for research and educational purposes. Oxytocin may be a research compound or a prescription medication; nothing here is intended to diagnose, treat, cure, or prevent any disease. Dosing figures reflect commonly-published research ranges, not a prescription. Consult a qualified healthcare provider before making any health decision. Read the full disclaimer →