Beginner setup
Vial sizes vary by vendor. Smaller bottles are usually 3 mL; larger bottles are often 10 mL. Match the label on the vial you actually bought, then use the calculator below if you need to adjust.
Vial strength 10 mg
Bottle format often 3 mL
BAC water 3 mL
Concentration 3.33 mg/mL
Overview
Oxytocin is the ‘bonding hormone’ — it drives social connection, trust, and intimacy. Intranasal sprays get all the attention, but subcutaneous injection is the standard research route when you want reliable absorption.
Preparation
Reconstitute a 10 mg vial with 3 mL of bacteriostatic water (BAC) for a ~3.33 mg/mL concentration. Refrigerate after mixing.
| Vial | BAC | Concentration |
|---|---|---|
| 10 mg | 3 mL | 3.33 mg/mL |
Protocol
| Period | Dose | Units (@ 3.33 mg/mL) | Frequency |
|---|---|---|---|
| Weeks 1–2 | 100 mcg | 3 units (0.03 mL) | 1x/day |
| Weeks 3–4 | 200 mcg | 6 units (0.06 mL) | 1x/day |
| Weeks 5–6 | 300 mcg | 9 units (0.09 mL) | 1x/day |
| Weeks 7–8 | 400 mcg | 12 units (0.12 mL) | 1x/day |
| Weeks 9–12 | 500 mcg | 15 units (0.15 mL) | 1x/day |
Cycle
4–12 week cycles. On-demand dosing before social or intimate situations is the common pattern, timed 15–30 minutes ahead.