Oxytocin
FDA-approved nonapeptide hormoneEstablished
FDA-approved nonapeptide (Pitocin) for labor induction/augmentation and postpartum hemorrhage. Intranasal research use for social cognition is not an approved indication.
For research use only.
Key Facts
- CAS
- 50-56-6
- Molecular Weight (MW)
- 1007.2 g/mol
- Half-life
- 1–6 minutes (IV)
- Unit
- IU
- Administration Route
- Intravenous / Intramuscular
- Frequency
- Continuous IV in labor; IM postpartum as labeled
- Last updated
- Aug 23, 2026
- Targets
- OXTR
Vendor price snapshot
Price per mg is list price divided by vial size in milligrams when both are known from public vendor listings. Peptide Library does not sell peptides. Confirm live prices on the vendor site.
- Vendors listing this peptide
- 5
- Listed offers
- 5
- Price per mg range
- $6.50–$16.00/mg
Overview
FDA-approved nonapeptide (Pitocin) for labor induction/augmentation and postpartum hemorrhage. Intranasal research use for social cognition is not an approved indication.
Protocol
- Dosage Range
- Obstetric IV infusion per label (milliunits/min)
- Frequency
- Continuous IV in labor; IM postpartum as labeled
- Cycle
- Peripartum only as labeled
- Administration Route
- Intravenous / Intramuscular
- Reconstitution Guide
- —
- Timing Notes
- Educational catalog only — not medical advice
Science
Mechanism of Action
Activates oxytocin receptors to cause uterine contraction and milk ejection; also a neuromodulator of social behavior.
Origin
Endogenous cyclic nonapeptide; synthetic pharmaceutical.
Targets
OXTR
Benefits
Labeled obstetric uses
Potential Side Effects
Side Effects
- Water intoxication
- Uterine hyperstimulation
- Hypotension
References
- Pitocin labelExternal reference