Oxytocin
Oxytocin Acetate
The 'bonding' hormone, studied intranasally for social, mood, and intimacy effects.
Class
Nonapeptide hormone / neuromodulator
Half-life
~3–5 minutes
Evidence
Limited human data
Limited human data
Small open-label studies, case series, or trials in a narrow population. Directionally informative, not conclusive.
Overview
Oxytocin is a natural hormone produced in the hypothalamus, best known for its roles in childbirth, lactation, and social bonding. The injectable form (Pitocin) is FDA-approved to induce labour, but the interest in the peptide-therapy world is different: low-dose intranasal or subcutaneous oxytocin for social connection, anxiety, mood, and intimacy/orgasm quality.
Human research on intranasal oxytocin is extensive but genuinely mixed — effects on trust, social cognition, and anxiety appear in some studies and fail to replicate in others, partly because delivery to the brain via the nose is inconsistent. Its use for intimacy is largely anecdotal.
How it works
- Agonises oxytocin receptors in the brain, modulating social bonding, trust, and stress circuits.
- Peripherally causes uterine and mammary smooth-muscle contraction (the basis of its labour use).
- Interacts with dopamine and serotonin reward pathways relevant to intimacy.
What the research shows
Researched effects
- Effects on social cognition, trust, and anxiety in some human trials (inconsistent)
- Reported improvements in mood and intimacy anecdotally
- Well-established uterine effects (its approved obstetric use)
Limitations & what it won't do
- Intranasal brain delivery and effects are inconsistent across studies.
- Intimacy/wellness benefits are largely anecdotal.
- Peripheral uterine activity makes it unsuitable in pregnancy outside obstetric supervision.
Dosing protocols
These ranges reflect published trials and community protocols. They are reference information, not a prescription. Doses are per injection unless noted.
Intranasal / sublingual protocol (community)
10–40 IUCompounded oxytocin is often prescribed as a nasal spray or sublingual troche. Follow a prescriber's guidance.
Reconstitution & measuring your dose
Handling
- Typical vial sizes
- 5 mg
- Suggested BAC water
- 2 mL
- Storage
- Refrigerate; oxytocin is heat- and light-sensitive.
- After reconstitution
- Reconstituted: limited; follow the compounding pharmacy's dating.
Why 2 mL? Usually compounded into a nasal spray or troche rather than injected. A 5 mg vial is formulated into a metered device; dosing is measured in IU.
Dose calculator
Draw to
10units
= 0.1 mL · 25 mcg per unit
Concentration
2500 mcg/mL
Doses per vial
20
Side effects
Common
- Nasal irritation
- Mild headache
- Occasional nausea
- Emotional lability in some users
Serious / rare
- Uterine contractions (relevant in pregnancy)
- Hyponatremia with very high or frequent dosing
- Cardiovascular effects at high doses
Contraindications & interactions
Do not use if you have
- Pregnant, breastfeeding, or trying to conceive
Oxytocin causes uterine contractions and is contraindicated in pregnancy outside supervised obstetric use.
Use caution if you have
- Cardiovascular disease
High doses can affect blood pressure and heart rate.
- Mood or psychiatric condition
Effects on mood and emotion vary; discuss with a prescriber for mood conditions.
What to monitor
- Mood and tolerability
- Blood pressure at higher doses
Commonly combined with
References
- Intranasal oxytocin: a systematic review of human social and behavioural effectsSystematic review, 2026
Research & educational information only — not medical advice.
You must be 18 or older to use this site. The peptides described are presented as research chemicals intended for research purposes only. Most are not approved by the FDA for human use. Dosing ranges reflect what has appeared in the scientific literature or community protocols and are not prescriptions. Nothing here replaces evaluation by a licensed physician who knows your full medical history.
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