Oxytocin (Oxytocin (OXT))
A nonapeptide hormone with roles in bonding, reproduction, and uterine contraction. Intranasal form researched for enhancing intimacy, trust, and social cognition.
How it works
Binds OXTR in social cognition brain regions (amygdala, nucleus accumbens) and reproductive organs. Modulates serotonin and dopamine in reward circuits.
Key facts
- Molecular weight: 1,007 Da
- Half-life: 3-5 min (IV) / 20-30 min (intranasal)
- Bioavailability: Low (oral), Moderate (intranasal ~2-5%)
- Storage: Nasal spray: room temperature. Solution: refrigerated.
Dosing overview
- Typical dose: 20-40 IU intranasal
- Frequency: As needed or daily
- Duration: Variable
- Route: Intranasal or IV (obstetric)
Reported benefits
- Enhanced social bonding
- Improved intimacy
- Anxiolytic effects
- Pain modulation
- Post-orgasmic well-being
Possible side effects
- Nasal irritation
- Headache
- Nausea (rare)
- Uterine cramping (women)
- Paradoxical anxiety
Research
- Intranasal oxytocin enhances couple communication (2022): Improved positive communication by 30% and reduced cortisol during conflict in couples.
- Oxytocin and sexual arousal dose-response (2021): 24 IU enhanced subjective arousal and orgasm intensity in both sexes vs placebo.
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Research and educational reference only. Not medical advice.