⚖ Head-to-Head · Sexual & Social Peptides

PT-141 vs Oxytocin

Mechanism, half-life, dosing & research status compared side-by-side.

PT-141
Sexual Health & Melanocortin
Approved
Sexual HealthMelanocortinFDA Approved
PT-141 (Bremelanotide) is a cyclic heptapeptide analog of Melanotan II and alpha-MSH that acts on melanocortin receptors (MC1R, MC3R, MC4R) in the central nervous system to activate sexual arousal pathways. Unlike PDE5 i…
Full PT-141 profile →
Oxytocin
Neurohormone / Reproductive
Approved (labor induction, postpartum hemorrhage prevention); nasal spray not FDA-approved
NeurohormoneReproductiveFDA ApprovedSocial BondingOxytocin Receptor
Oxytocin is a nine-amino acid neuropeptide and neurohormone synthesized in the hypothalamic paraventricular and supraoptic nuclei, best known for its roles in parturition, breastfeeding, and social bonding. As a neurotra…
Full Oxytocin profile →
Technical Specs Comparison
MetricPT-141Oxytocin
Research Status FDA Approved FDA Approved (obstetric); Research (CNS)
Molecular Weight 1,025.2 Da 1007.19 Da
Half-Life ~2.7 hours 1-6 minutes (plasma); longer in CNS
Peak Time ~45–60 min 30-60 minutes post-intranasal; immediate IV
Typical Dose 1.75 mg (FDA); 1–2 mg research Obstetric: 0.5-2 mIU/min IV titrated to effect; Intranasal CNS: 20-40 IU
Frequency As needed (max 1× per 24h) Obstetric: continuous IV; CNS research: single dose or daily
Route Subcutaneous Intravenous (obstetric); intranasal (CNS/research)
Amino Acids 7 9
WADA Status Not Listed Not listed
FDA Status Approved Approved (labor induction, postpartum hemorrhage prevention); nasal spray not FDA-approved
Stack Compatibility & Key Differences
Both are active research compounds. See individual pages for full protocol data.
Frequently Asked Questions
What is the difference between PT-141 and Oxytocin?
PT-141: PT-141 (Bremelanotide) is a cyclic heptapeptide analog of Melanotan II and alpha-MSH that acts on melanocortin receptors (MC1R, MC3R, MC4R) in the central nervous system to activate sexual arousal pathways. Unlike PDE5 i… Oxytocin: Oxytocin is a nine-amino acid neuropeptide and neurohormone synthesized in the hypothalamic paraventricular and supraoptic nuclei, best known for its roles in parturition, breastfeeding, and social bonding. As a neurotra…
Can you stack PT-141 and Oxytocin?
Both are active research compounds. See individual pages for full protocol data.
Which has a longer half-life, PT-141 or Oxytocin?
PT-141 half-life: ~2.7 hours. Oxytocin half-life: 1-6 minutes (plasma); longer in CNS.
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Verified Scientific Data
All specifications on this page are sourced from peer-reviewed literature and primary research. Half-life values, dosing ranges, and mechanism data are cross-referenced against published studies. Last audited 2026-06-07.
● Peer-reviewed sources ● Audit timestamp: 2026-06-07 ● Data version: ASCEND Wiki 2026
Data sourced from ASCEND Wiki · PT-141 profile · Oxytocin profile · All comparisons
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