Oxytocin
Also known as: Pitocin (IV obstetric)
Oxytocin is a nine-amino acid peptide hormone (Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, with a disulfide bridge between Cys1 and Cys6) produced in the hypothalamic paraventricular and supraoptic nuclei. The synthetic form (Pitocin) is FDA-approved as IV/IM injection for labor induction/augmentation and postpartum hemorrhage control. Intranasal oxytocin is NOT FDA-approved and is used off-label or in research settings for social/behavioral indications, where evidence is mixed.
Pricing for Oxytocin
Live vendor pricing, normalized to $/mg so sizes compare fairly — fused with each seller's Merit trust score and latest independent COA purity. Prices refresh daily.
Average price
$8.51/mg
range $2.00–$25.00/mg
Sellers
45
from $0.00
45-day trend
-12.4%
vs 45-day avg $/mg
36 of 45 sellers have a current price· 7 stale listings hidden (not seen in 7 days)
Top Merit pick
🇺🇸 Glacier Aminos99✓ verified at source · 4h ago
$5.60/mg -34.2% vs avg$55.99
10mg
no purity- 🇺🇸 BioLongevity Labs96
✓ verified at source · 3h ago
$3.25/mg -61.8% vs avg$64.97
20mg
- 🇺🇸 Moglabs96
via Disclosed Labs · 4h ago
$4.80/mg -43.6% vs avg$24.00
5mg
no purity - 🇺🇸 Licensed Peptides95
✓ verified at source · 3h ago
$7.70/mg -9.5% vs avg$76.99
10mg
- 🇺🇸 Orbitrex Peptides95
✓ verified at source · 3h ago
$14.99/mg +76.2% vs avg$29.99
2mg
- 🇺🇸 Peptidology89
✓ verified at source · 4h ago
$4.30/mg -49.5% vs avg$42.99
10mg
no purity - 🇺🇸 Verified Peptides86
via Disclosed Labs · 4h ago
$3.50/mg -58.9% vs avg$35.00
10mg
no purity - 🇺🇸 EZ Peptides85
✓ verified at source · 4h ago
$5.80/mg -31.8% vs avg$58.00
10mg
99.5% purity 2 COAs - Peptide Supply Co.83
via Disclosed Labs · 4h ago
$3.00/mg -64.7% vs avg$300
100mg
no purity - 🇺🇸 Ascension Peptides83
via Disclosed Labs · 4h ago
$25.00/mg +193.7% vs avg$49.99
2mg
no purity - 🇺🇸 Blank Peptides81
✓ verified at source · 4h ago
$12.00/mg +41% vs avg$60.00
5mg
99.5% purity 2 COAs - 🇺🇸 Certified Peptides61
✓ verified at source · 4h ago
$5.20/mg -38.9% vs avg$52.00
10mg
no purity 1 COA - 🇭🇰 zztai Peptide Ltd43
✓ verified at source · 4d ago · stale
$12.80/mg +50.4% vs avg$64.00
5mg
no purity - 🇺🇸 Genetic PeptideUnscored
✓ verified at source · 4h ago
$2.00/mg -76.5% vs avg$20.00
10mg
no purity - 🇺🇸 Alpha OmegaUnscored
✓ verified at source · 4h ago
$3.50/mg -58.9% vs avg$35.00
10mg
no purity - 🇺🇸 Alpha PeptidesUnscored
via Disclosed Labs · 4h ago
$3.96/mg -53.5% vs avg$39.59
10mg
no purity - 🇺🇸 Biotech PeptidesUnscored
✓ verified at source · 4h ago
$4.50/mg -47.1% vs avg$45.00
10mg
no purity - 🇺🇸 Core PeptidesUnscored
✓ verified at source · 4h ago
$5.20/mg -38.9% vs avg$52.00
10mg
no purity - 🇺🇸 Paramount PeptidesUnscored
✓ verified at source · 4h ago
$5.53/mg -35.1% vs avg$55.25
10mg
no purity - peptidetech.isUnscored
via Disclosed Labs · 4h ago
$6.00/mg -29.5% vs avg$29.99
5mg
no purity - 🇺🇸 Oneday CompoundsUnscored
✓ verified at source · 4h ago
$6.50/mg -23.6% vs avg$32.49
5mg
no purity - 🇺🇸 Atomik LabzUnscored
✓ verified at source · 4h ago
$6.80/mg -20.1% vs avg$34.00
5mg
no purity - Solution PeptidesUnscored
✓ verified at source · 4h ago
$6.80/mg -20.1% vs avg$34.00
5mg
no purity - True PeptideUnscored
✓ verified at source · 4h ago
$6.80/mg -20.1% vs avg$34.00
5mg
no purity - 🇺🇸 Peptide CraftersUnscored
✓ verified at source · 4h ago
$9.00/mg +5.8% vs avg$45.00
5mg
no purity - realpeptides.coUnscored
via Disclosed Labs · 4h ago
$9.00/mg +5.8% vs avg$90.00
10mg
no purity - Modern Research PeptidesUnscored
✓ verified at source · 4h ago
$14.99/mg +76.2% vs avg$29.99
2mg
no purity - 🇺🇸 Bulk PeptidesUnscored
✓ verified at source · 4h ago
$24.00/mg +182% vs avg$120
5mg
no purity - 🇺🇸 Soma PeptidesUnscored
✓ verified at source · 4h ago
$24.50/mg +187.9% vs avg$49.00
2mg
no purity
Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.
COAs for Oxytocin
41 third-party tests across 13 vendors. Each card links to the full report.
For
Oxytocin
by Ion Peptide· batch OT2-06172026
For
Oxytocin
by Ion Peptide· batch OT2-06172026
For
Oxytocin
by Blank Peptides· batch B-1340958-P
For
Oxytocin
by Pepsgpt· batch P-4275312-P
For
Oxytocin
by Ion Peptide· batch DTI0-0430 2026
For
Oxytocin
by Peptidegurus· batch cmojgra8k00339grxn334qvo9
For
Oxytocin
by Ion Peptide· batch OT2-03242026
For
Oxytocin
by Ion Peptide· batch OT2-03242026
For
Oxytocin
by Mile High Compounds· batch OXN-010-MH-01
For
Oxytocin
by Profound Aminos· batch cmojb87g401hikirxz7zxvzut
For
Oxytocin
by EZ Peptides· batch EZP-OXY1002092026-01
For
Oxytocin
by EZ Peptides· batch EZP-OXY1002092026-01
For
Oxytocin
by Ruo Bio
For
Oxytocin
by Ion Peptide· batch OT2-123125
For
Oxytocin
by Ion Peptide· batch OT2-123125
For
Oxytocin
by Ion Peptide· batch OT2-121925
For
Oxytocin
by Ion Peptide· batch OT2-121925
For
Oxytocin
by Licensed Peptides· batch 1201OXW
For
Oxytocin
by Simple Peptide· batch OXYTT2022025-J
For
Oxytocin
by Licensed Peptides· batch 1201OXW
For
Oxytocin
by BioLongevity Labs· batch 22-3-45952
For
Oxytocin
by BioLongevity Labs· batch cmojb7aio01a1kirxdqsd4vsc
For
Oxytocin
by Simple Peptide· batch OXYY110172025-J
For
Oxytocin
by Ion Peptide· batch OT2-1025
20 citations indexed for Oxytocin
Study · 2026
Impact of oxytocin discontinuation on fetal heart rate and uterine contractility: A pre-specified ancillary analysis embedded within a randomized trial
Introduction Oxytocin is widely used to augment uterine contractions during labor. However, its use has been associated with fetal heart rate (FHR) abnormalities and neonatal morbidity, which may be reduced by discontinuing oxytocin during labor.
animal · 2026
Untangling Mephedrone-Induced Social Reward in Rats-The Involvement of Oxytocin and Vasopressin V<sub>1A</sub> Receptors
The rewarding effects of psychostimulants are strongly influenced by social context, yet the underlying neurochemical and neuropeptidergic mechanisms remain unclear. This study examined the role of oxytocin (OT) and vasopressin (AVP) in context-dependent reward induced by subchronic mephedrone treatment in rats.
Study · 2026
Endogenous oxytocin-linked heart-rate synchrony and social connection during live sports spectatorship
Oxytocin is a putative pharmacological target for social dysfunction. However, clinical trials of intranasal oxytocin have produced modest and inconsistent effects, motivating the search for naturalistic, non-pharmacological ways to recruit endogenous oxytocin.
Study · 2026
Metal- and Redox-Dependent Oxytocin Species Differentially Regulate Invasion and Migration in Triple-Negative Breast Cancer
Oxytocin is a nine-amino-acid peptide hormone renowned for its roles in reproduction and childbirth. Beyond these classical functions, it has attracted increasing research interest for its broader biological activities.
animal · 2026
Oxytocin promotes socially triggered cataplexy
People with narcolepsy have intrusive episodes of muscle weakness known as cataplexy, which are usually triggered by strong, positive emotions. As cataplexy occurs almost exclusively during social interactions, we examined whether it is promoted by the prosocial neuropeptide oxytocin.
review · 2026
Oxytocin release patterns and effects, with a focus on touch, social interaction, and closeness
Clinical evidence indicates that tactile stimulation of the skin, such as stroking or gentle touch, elicits a range of beneficial physiological and psychological responses, such as increased social interaction, wellbeing, calm, restorative and growth promoting effects, as well as reduced fear, pain, and stress levels.