Oxytocin
Last reviewed June 3, 2026
Also known as: OXT, Pitocin (IV form), Syntocinon
Quick Answer
Oxytocin is a neuropeptide research compound (not FDA-approved for human use) studied for social bonding. Oxytocin is the 'bonding hormone' — a natural neuropeptide that reduces anxiety, promotes trust and social connection, and has documented gut and immune effects when used intranasally as a research compound. Research dose: 24–40 mcg as needed or 1-2x daily. Half-life: 5 minutes. Available from COA-verified vendors with code PEPTIDEX for up to 20% off.
Where to Source
Ranked by $/mg1Bio Longevity Labs Best $/mg
$55.22
$64.97Save $9.75
10mg vial
$6.50/mg
99%+ purityTested May 2026
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Rankings independent · Research use only
Nonapeptide produced in the hypothalamus and released by the posterior pituitary. Binds oxytocin receptors (OXTR) broadly expressed in brain, heart, gut, and immune cells. Modulates HPA axis stress re
Where to Buy Oxytocin
COA-verified vendors · Use code PEPTIDEX for up to 20% off
* Prices for research peptide acquisition. Not therapeutic products.
| Vendor | Purity | List Price | With PEPTIDEX | Code | Shop |
|---|---|---|---|---|---|
Bio Longevity LabsTriple-Tested | 99%+ | $64.9710 mg | $55.22Save 15% | PEPTIDEX | * Research vendor — verify your regional regulations before purchase. Shop |
Bio Longevity LabsTriple-Tested
$64.97 · 10 mg$55.22−15%
Use code PEPTIDEX for 15% off at Bio Longevity Labs.
* Research vendor — verify your regional regulations before purchase.
Shop at Bio Longevity Labs§ Mechanism of Action
Nonapeptide produced in the hypothalamus and released by the posterior pituitary. Binds oxytocin receptors (OXTR) broadly expressed in brain, heart, gut, and immune cells. Modulates HPA axis stress response, reduces cortisol, promotes prosocial behavior, accelerates GI motility, and exerts anti-inflammatory effects via NF-kB inhibition. Intranasal administration crosses blood-brain barrier to produce central effects.
§ Primary Benefits
- 1Social bonding
- 2anxiety reduction
- 3gut motility
- 4anti-inflammation
- 5libido
- 6trust and empathy
§ Clinical Evidence
Intranasal oxytocin reduces cortisol and enhances social cognition
Heinrichs et al.: Intranasal oxytocin reduced cortisol response to social stress and anxiety compared to placebo in a double-blind RCT.
ModerateOxytocin improves gastrointestinal motility in functional dyspepsia
Clinical research demonstrating oxytocin's role in accelerating gastric emptying and improving symptoms in functional gastrointestinal disorders.
Moderate§ Safety Profile
IV/IM oxytocin (Pitocin/Syntocinon) is FDA-approved for obstetric indications only. Intranasal oxytocin as a research compound is NOT FDA-approved. Research use only. Short half-life. May cause water retention at high doses.
See our evidence grading methodology for how we evaluate and grade peptide safety data.
§ Dosing Protocol
* Dosing data from published literature — not a human use recommendation.
RouteNasal
Dose Range24–40 mcg
FrequencyAs needed or 1-2x daily
Timing30 min before social interaction or pre-workout for prosocial/anti-stress effects
Research dose: 24–40 IU intranasal. Half-life ~5 min (IV); central effects persist 30-90 min. Research use only.
§ Pharmacokinetics
⏱️ Half-Life: 5min
Plasma concentration over time§ Expected Outcomes
Week 1
Acute anxiolytic and prosocial effects within 30 minutes of dosing
Weeks 2–4
Chronic reduction in stress reactivity with consistent use
§ Adverse Effects
| Side Effect | Incidence | Severity |
|---|---|---|
Water retention | ~5% | mild |
Nasal irritation | ~5% | mild |
Mild headache | ~3% | mild |
Where to Source Oxytocin for Research
Finding verified, high-purity Oxytocin requires rigorous COA verification. We independently evaluate vendors based on third-party HPLC testing, purity thresholds (≥98%), and batch-specific documentation.
View COA-Verified Oxytocin✓ Third-party tested·✓ US shipping·✓ COA on every batch
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Cite This Page
⚠️ Educational only · Not medical advice · For research use only. Information on this page is compiled from peer-reviewed literature and is intended strictly for educational and informational purposes. Peptides discussed may be unapproved research chemicals — consult a licensed healthcare professional before considering any peptide compound. Read our full disclaimer
Affiliate disclosure: PeptiDex may earn commissions from purchases made through vendor links on this page. This does not affect our editorial ranking or vendor recommendations — we exclusively feature vendors that pass independent COA verification. See our methodology · Editorial policy
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