Which vendors sell Oxytocin with independent COA testing?

21 vendors in the Merit Verified directory have independent COA evidence on file for Oxytocin — 52 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 18 scored sellers

$5.60/mg

$55.99 · 10mg

no COAs yet

Buy code MERIT · 10% off

Best value

🇺🇸 Verified Peptides 87

Lowest $/mg among scored sellers

$3.50/mg

$35.00 · 10mg

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

$8.99/mg

range $2.00–$25.00/mg

Sellers

from $20.00

45-day trend

-2.9%

vs 45-day avg $/mg

37 of 46 sellers have a current price· 12 stale hidden· 7 unverified hidden

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · just now	$55.99· 10mg	$5.60/mg	-37.7%	—	—	99	Buy code MERIT · 10% off
🇺🇸	Moglabs ✓ verified at source · just now	$24.00· 5mg	$4.80/mg	-46.6%	—	—	96	Buy
🇺🇸	BioLongevity Labs ✓ verified at source · just now	$64.97· 10mg	$6.50/mg	-27.7%	99.9%	5	96	Buy code MERIT · 15% off
🇺🇸	Licensed Peptides ✓ verified at source · just now	$76.99· 10mg	$7.70/mg	-14.3%	97.9%	3	95	Buy code MERIT · 5% off
🇺🇸	Peptide Crafters ✓ verified at source · just now	$38.25· 5mg	$7.65/mg	-14.9%	—	1	94	Buy code CRAFTERS10 · 10% off
🇺🇸	Soma Peptides ✓ verified at source · just now	$49.00· 2mg	$24.50/mg	+172.7%	98.7%	2	89	Buy
🇺🇸	Ruo Bio ✓ verified at source · just now	$22.00· 5mg	$4.40/mg	-51%	99.0%	2	88	Buy
🇺🇸	Verified Peptides ✓ verified at source · just now	$35.00· 10mg	$3.50/mg	-61%	—	—	87	Buy
🇺🇸	Simple Peptide ✓ verified at source · just now	$35.00· 10mg	$3.50/mg	-61%	98.7%	3	85	Buy
🇺🇸	EZ Peptides ✓ verified at source · just now	$58.00· 10mg	$5.80/mg	-35.5%	99.5%	2	85	Buy

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · just now
99

$5.60/mg -37.7% vs avg

$55.99

10mg

no purity

Buy code MERIT · 10% off
🇺🇸 Moglabs
✓ verified at source · just now
96

$4.80/mg -46.6% vs avg

$24.00

5mg

no purity

Buy
🇺🇸 BioLongevity Labs
✓ verified at source · just now
96

$6.50/mg -27.7% vs avg

$64.97

10mg

99.9% purity 5 COAs

Buy code MERIT · 15% off
🇺🇸 Licensed Peptides
✓ verified at source · just now
95

$7.70/mg -14.3% vs avg

$76.99

10mg

97.9% purity 3 COAs

Buy code MERIT · 5% off
🇺🇸 Peptide Crafters
✓ verified at source · just now
94

$7.65/mg -14.9% vs avg

$38.25

5mg

no purity 1 COA

Buy code CRAFTERS10 · 10% off
🇺🇸 Soma Peptides
✓ verified at source · just now
89

$24.50/mg +172.7% vs avg

$49.00

2mg

98.7% purity 2 COAs

Buy
🇺🇸 Ruo Bio
✓ verified at source · just now
88

$4.40/mg -51% vs avg

$22.00

5mg

99.0% purity 2 COAs

Buy
🇺🇸 Verified Peptides
✓ verified at source · just now
87

$3.50/mg -61% vs avg

$35.00

10mg

no purity

Buy
🇺🇸 Simple Peptide
✓ verified at source · just now
85

$3.50/mg -61% vs avg

$35.00

10mg

98.7% purity 3 COAs

Buy
🇺🇸 EZ Peptides
✓ verified at source · just now
85

$5.80/mg -35.5% vs avg

$58.00

10mg

99.5% purity 2 COAs

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

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

All 52 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

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

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

Oxytocin Use During Labour: An Analysis of Canadian Medico-legal Obstetrical Case Files

Gene-environment interaction between perinatal oxytocin exposure and Pten mutation shapes epigenetic reprogramming of oxytocin signaling and behavior in mice

Comparative genomic analysis of oxytocin and oxytocin receptor genes in the family Equidae

Anterior cingulate cortex, anterior insular cortex and altruistic behaviors; a hypothetical role for oxytocin