Healing

Oxytocin Acetate

Nonapeptide · Neurohypophysial hormone · 9 amino acids

FDA · APPROVED (PITOCIN)

Half-life

~4 minutes

Very short

minsdays

Route

SubQ injection

Evidence

Approved therapeutic

Risk

Moderate

Overview

Known for

The 'bonding hormone'. Promotes social bonding, trust, anxiety reduction, and intimacy. Also has roles in wound healing, anti-inflammation, and stress reduction. Nasal spray is the most common delivery.

Mechanism

"Love hormone" — naturally produced during bonding, birth, breastfeeding. Promotes social bonding, trust, uterine contraction, milk ejection.

Key facts

Format
Lyophilized powder
Mechanism targets
Classification
Authoritative
Supply & nature
ExogenousExogenous
FDA category
Approved (Pitocin)

Evidence & standing

Evidence base
Approved therapeutic
Risk level
Moderate
Best studies
5 references
  • FDA Approved: Pitocin (IV, labor induction)
  • Kosfeld et al. (2005) Nature 435:673-6 — Intranasal trust/social bonding
  • MacDonald et al. (2011) Harvard Rev Psychiatry 19:312-28 — Social behavior review
  • Well-established safety profile for medical use
  • Off-label intranasal use for social/bonding purposes is less studied

Dosage & protocol

Typical dose
20-40 IU
Research range
10–20 IU
Cycle
As needed
Onset
0 days first effects
Full effect
0 days
Half-life
~3-5min
~3-5 minutes (IV) | ~20 minutes (intranasal)
Protocol

Intranasal: 20-40 IU (typically 1-2 sprays per nostril). SubQ: 5-20 IU. Used before social situations or intimacy.

Time to effects

EARLY: 15-30 minutes

FULL: Single dose

On-demand compound similar to PT-141.

15-30 min post-administration: Increased feelings of warmth, bonding, trust, reduced anxiety.

Duration: 1-3 hours for acute effects.

Intranasal onset is faster (15 min) than SubQ (30 min). Effects are felt from first dose. No loading required.

Some report cumulative anxiety-reduction benefits with regular use over 2-4 weeks.

Recommended vial
  • 2mg vials

Small doses (IU-level). 2mg = many doses. Oxytocin is fragile — smaller vials = fresher. 5 and 10mg risk degradation.

Reference figures only

Dosing reflects published laboratory protocols and is not guidance for use in any living subject.

Safety

Reversibility
Fully Reversible
Side effects

Nausea, headache, intranasal irritation, uterine cramping (women), ⚠️ water intoxication/hyponatremia at high IV doses (Pitocin obstetric use)

Interactions

Prostaglandins (synergistic uterine contraction), SSRIs (may enhance effect), vasopressin analogs

Handle with research caution

⚠️ ABSOLUTE CONTRAINDICATION in pregnancy — oxytocin induces uterine contractions and can cause premature labour

No strict contraindications with other peptides on this list.

Storage & handling

Lyophilised
12–24 months
2–8°C
Reconstituted
4–6 weeks
2–8°C