Oxytocin
OXTNonapeptide hormone studied in social and reproductive behavior.
Also known as: Pitocin
Overview
Oxytocin is a nine-amino-acid neuropeptide hormone studied extensively in social bonding, reproductive physiology, and neuroendocrine research.
A nine-amino-acid neuropeptide hormone central to social bonding, trust, and reproductive physiology. Beyond its approved obstetric use, research explores intranasal oxytocin for social cognition, anxiety, and relationship-related behaviors.
Binds oxytocin receptors in the central nervous system and peripheral tissues, influencing smooth-muscle contraction and social-behavior circuits.
Molecular information
Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (disulfide bridge)Differs from vasopressin by only two residues; features an internal disulfide bond.
Pharmacokinetics
Illustrative relative-concentration model derived from published pharmacokinetic research. Curve is normalized and provided for educational comparison only — not a dosing schedule.
Research applications
- Social-behavior and bonding research
- Reproductive physiology studies
- Neuroendocrine signaling investigations
Research protocols
Protocols summarized from published research models. Provided for scientific reference only — not dosing guidance for human use.
Observed effects timeline
Aggregated observations reported across research literature. Timing and magnitude vary by model and are not a guarantee of outcome.
Acute
Social-bonding and anxiolytic effects reported within ~30 minutes of intranasal dosing.
Ongoing
Behavioral and mood-related effects reported with repeated research use.
Research compatibility
Describes how compounds are studied alongside one another in the literature. Not a recommendation to co-administer.
Kisspeptin
Distinct reproductive/behavioral pathways.
PT-141
Complementary in sexual-behavior research contexts.
How to reconstitute
Reconstitute with bacteriostatic water, swirl gently, and refrigerate. Oxytocin is fragile — avoid heat and agitation.
- 1Allow the vial to reach room temperature (15–20 minutes).
- 2Swab the stopper with alcohol and let it air dry.
- 3Add bacteriostatic water slowly down the vial wall.
- 4Swirl gently until dissolved — do not shake.
- 5Refrigerate at 2–8 °C and protect from light.
Quality indicators
Uniform white powder
Lyophilized cake should be white to off-white without discoloration.
Clear solution
Reconstitutes to a clear, colorless, particle-free solution.
Cold-chain integrity
Reconstituted solution requires 2–8 °C storage.
Slight clumping
Small clumps that dissolve completely with gentle swirling are acceptable — shipping can cause minor compaction.
Collapsed or melted appearance
Powder that looks collapsed, melted, or stuck to the vial walls may have been exposed to heat in transit.
Cloudy after reconstitution
Persistent cloudiness, particles, or precipitate after gentle mixing can indicate a degraded or contaminated peptide.
Reported observations & safety
Safety signals reported in the research literature. Compiled for scientific awareness — not medical advice.
- An FDA-approved hormone (obstetric use); intranasal research use is generally reported as well tolerated.
- High or frequent dosing can have paradoxical or context-dependent behavioral effects in research.
References & further reading
Intranasal oxytocin and social cognition (review)
Review of oxytocin's effects on social bonding, trust, and anxiety in behavioral research.
View studyTopics
This entry is provided for educational and informational purposes only. It is not medical advice, a dosing protocol, or a claim of therapeutic benefit. Research compounds are supplied strictly for laboratory and research use — not for human or veterinary consumption.
Approved for one or more clinical indications by a major regulator.
This compound is part of our educational reference and is not currently stocked. Browse the catalogue for available research-grade peptides.
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