Oxytocin
Also known as The bonding hormone
The bonding hormone, used for mood, connection and sexual response.
How it's taken
a small shot into the fat just under the skin (belly, thigh, or love handle)
sprayed into the nose and absorbed through the nasal lining — no needles
Availability varies by supplier — injectable is the most commonly researched form.
New to peptides? Start with the beginner's guide.
- Documented dose
- 100–200 mcg
- Typical frequency
- Once daily
- Cycle
- 8 weeks on, 4 off
- Half-life
- Very short — minutes in blood
- Common vial sizes
- 10 mg
- Regulatory status
- Prescription medicine in its approved forms.
Dose on a U-100 syringe (100–200 mcg)
| Vial | BAC water | Draw |
|---|---|---|
| 10 mg | 2.5 mL | 2.5–5.0 units |
| 10 mg | 3 mL | 3.0–6.0 units |
On a U-100 syringe, 100 units = 1 mL, and the syringe holds 100 units total. Most people keep a single subcutaneous injection under about 50 units — bigger volumes are usually mixed stronger (less water) or split into two shots. Only mixes that fit in one syringe are shown. Always double-check with the reconstitution calculator.
What it does
Oxytocin is what your body releases during touch, orgasm and closeness. Used deliberately, people report warmer mood, easier social connection, reduced anxiety, and stronger sexual response. Doses are tiny, so a small syringe matters.
Mechanism
Acts on oxytocin receptors in the brain and body, modulating social bonding circuits, stress response, and smooth-muscle contraction.
Storage — lyophilisedwhat's this?
Refrigerate the sealed vial.
Storage — reconstitutedwhat's this?
Refrigerate and use within about 4 weeks.
Reconstitution noteswhat's this?
Mix a 10 mg vial with 2.5 mL (250 units) of bacteriostatic water (4 mg/mL). Doses are very small: 3 units is about 100 mcg, 6 units about 200 mcg — a 0.3 mL or 0.5 mL syringe is strongly recommended. Nasal formulations are also common.
Stacks well with
- PT-141Bonding and mood alongside direct arousal.
- Kisspeptin-10Hormone-axis support with the connection side covered.
Popular combinations reported in the community and research literature — not a recommendation. Adding peptides multiplies side-effect risk; check with a clinician.
Commonly reported side effects
- Headache
- Flushing
- Nausea
- Emotional sensitivity
- Low blood sodium at high repeated doses
Contraindications noted
- Pregnancy
- Heart rhythm disorders without clinician oversight
Research notes
Prescription oxytocin is used in obstetrics; the social and mood effects seen in research are dose- and context-dependent.
Track this properly
Work out syringe units with the calculator, or set up a full schedule in about a minute.
Reference information only, not medical advice. See our medical disclaimer.