Which vendors sell Oxytocin with independent COA testing?

21 vendors in the Merit Verified directory have independent COA evidence on file for Oxytocin — 53 COAs total. COA coverage and test dates are listed on the Oxytocin page at https://meritverified.org/peptides/oxytocin.

How do I verify the quality of Oxytocin from a vendor?

To verify Oxytocin quality, look for an independent certificate of analysis (COA) from a third-party lab — not a lab the vendor owns or pays directly. The COA should state the tested compound, lot number, purity percentage (identity and concentration), and the lab's name. Cross-reference the lot number against the vendor's current stock. Merit Verified indexes COAs for Oxytocin at https://meritverified.org/peptides/oxytocin so you can compare evidence across vendors before buying.

What is the regulatory status of Oxytocin?

Oxytocin is tracked in the Merit Verified registry. Regulatory status for research peptides in the US has been evolving — the FDA has reclassified a number of peptides out of the 503A compounding ingredient list since 2025. Merit Verified does not provide legal or regulatory advice; check official FDA sources or consult a licensed professional for the current status of Oxytocin in your jurisdiction.

Nootropic / Cognitive

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.

Where to buy · live market data

Who's worth your money for Oxytocin

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

🇺🇸 Glacier Aminos 99

Highest Merit Score (99) of 22 scored sellers

$5.60/mg

$55.99 · 10mg

no COAs yet

Buy Code MERIT · 10% off

Best value

🇭🇰 zztai Peptide Ltd 42

Lowest $/mg among scored sellers

$0.64/mg

$64.00 · 100mg

no COAs yet

Buy

Most tested

🇺🇸 BioLongevity Labs 96

5 independent COAs on file

$6.50/mg

$64.97 · 10mg · 99.9% purity

5 COAs

Buy Code MERIT · 15% off

Average price

$9.11/mg

range $0.64–$25.00/mg

Sellers

from $20.00

45-day trend

-2.3%

vs 45-day avg $/mg

30 of 41 sellers have a current price· 1 stale hidden· 7 unverified hidden

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · 10h ago	$55.99· 10mg	$5.60/mg	-38.6%	—	—	99	Buy Code MERIT · 10% off
🇺🇸	Moglabs ✓ verified at source · 9h ago	$24.00· 5mg	$4.80/mg	-47.3%	—	—	96	Buy
🇺🇸	BioLongevity Labs ✓ verified at source · 9h ago	$64.97· 10mg	$6.50/mg	-28.7%	99.9%	5	96	Buy Code MERIT · 15% off
🇺🇸	Profound Aminos via Disclosed Labs · 10h ago	$37.00· 5mg	$7.40/mg	-18.8%	98.7%	2	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · 9h ago	$76.99· 10mg	$7.70/mg	-15.5%	97.9%	3	95	Buy Code MERIT · 5% off
🇺🇸	Orbitrex Peptides via Disclosed Labs · 10h ago	$29.99· 2mg	$14.99/mg	+64.6%	99.3%	1	95	Buy Code Orbitrex10 · 10% off
🇺🇸	Peptide Crafters ✓ verified at source · 10h ago	$45.00· 5mg	$9.00/mg	-1.2%	—	1	94	Buy Code CRAFTERS10 · 10% off
🇺🇸	Soma Peptides ✓ verified at source · 1d ago	$49.00· 2mg	$24.50/mg	+168.9%	98.7%	2	89	Buy
🇺🇸	Ruo Bio ✓ verified at source · 9h ago	$38.00· 5mg	$7.60/mg	-16.6%	99.0%	2	88	Buy
🇺🇸	Verified Peptides ✓ verified at source · 9h ago	$35.00· 10mg	$3.50/mg	-61.6%	—	—	87	Buy

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · 10h ago
99

$5.60/mg -38.6% vs avg

$55.99

10mg

no purity

Buy Code MERIT · 10% off
🇺🇸 Moglabs
✓ verified at source · 9h ago
96

$4.80/mg -47.3% vs avg

$24.00

5mg

no purity

Buy
🇺🇸 BioLongevity Labs
✓ verified at source · 9h ago
96

$6.50/mg -28.7% vs avg

$64.97

10mg

99.9% purity 5 COAs

Buy Code MERIT · 15% off
🇺🇸 Profound Aminos
via Disclosed Labs · 10h ago
95

$7.40/mg -18.8% vs avg

$37.00

5mg

98.7% purity 2 COAs

Buy
🇺🇸 Licensed Peptides
✓ verified at source · 9h ago
95

$7.70/mg -15.5% vs avg

$76.99

10mg

97.9% purity 3 COAs

Buy Code MERIT · 5% off
🇺🇸 Orbitrex Peptides
via Disclosed Labs · 10h ago
95

$14.99/mg +64.6% vs avg

$29.99

2mg

99.3% purity 1 COA

Buy Code Orbitrex10 · 10% off
🇺🇸 Peptide Crafters
✓ verified at source · 10h ago
94

$9.00/mg -1.2% vs avg

$45.00

5mg

no purity 1 COA

Buy Code CRAFTERS10 · 10% off
🇺🇸 Soma Peptides
✓ verified at source · 1d ago
89

$24.50/mg +168.9% vs avg

$49.00

2mg

98.7% purity 2 COAs

Buy
🇺🇸 Ruo Bio
✓ verified at source · 9h ago
88

$7.60/mg -16.6% vs avg

$38.00

5mg

99.0% purity 2 COAs

Buy
🇺🇸 Verified Peptides
✓ verified at source · 9h ago
87

$3.50/mg -61.6% vs avg

$35.00

10mg

no purity

Buy

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.

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Compound reference

About Oxytocin

CAS

50-56-6

Molecular formula

C43H66N12O12S2

Sequence

CYIQNCPLG

Typical dose range

24 IU intranasal per administration (common research dose); 24-40 IU intranasal studied in clinical trials; IV obstetric use (Pitocin) is weight/indication-based and distinct from research protocols

Half-life

~3-5 minutes (IV, peripheral plasma)

Independent evidence

COAs for Oxytocin

53 third-party tests across 21 vendors. Each card links to the full report.

All 53 COAs for Oxytocin →

Measured purity over time

Oxytocin

Who's worth your money for Oxytocin

Watch Oxytocin

About Oxytocin

COAs for Oxytocin

20 citations indexed for Oxytocin

A multiscale PBPK-PD model of oxytocin-induced uterine excitation and contraction

Higher maternal body mass index is associated with increased oxytocin requirements during induction of labor: a population-based cohort study

Oxytocin discontinuation after the active phase of induced labour: an overview of systematic reviews

Relation between serum oxytocin levels and impulsivity in patients under treatment for alcohol use disorder

Comparative atlas of PVN oxytocin and vasopressin systems reveals sex-conserved input-output wiring

Women's experiences of augmentation of labour with synthetic oxytocin in Ireland: A qualitative descriptive study