Where to Buy Oxytocin in 2026: 9 Lab-Tested Sellers, From $2.52/mg With a Coupon Code
Where to buy Oxytocin: PepAssess lists Oxytocin at 24 vendors. As of November 12, 2026, the lowest price with a coupon code is $2.52/mg at Lost Coast Aminos (code PEPASSESS); the median across all sellers is $7/mg. Vendors are ranked by Evidence Score.
Prices and codes updated November 12, 2026 · re-checked every night
Oxytocin is a nine-amino-acid hormone made in the hypothalamus.
Learn more about Oxytocin from the published research: National Institutes of Health (DailyMed) · The Cochrane Database of Systematic Reviews (2025) · The International Journal of Neuropsychopharmacology (2021)
The compounds listed on this page are for research purposes only, not for human consumption.
Oxytocin reconstitution calculator →
Oxytocin coupon codes
Prices with the code taken off · updated November 12, 2026 · re-checked every night
Every Oxytocin coupon code
26 Oxytocin sellers with a confirmed code — highest Evidence Score first.
| Shop | Score | Vial with code | Per mg | Per mg with code | vs typical | Code discount | Code | |
|---|---|---|---|---|---|---|---|---|
| BioLongevity Labs | 100score | 10 mg vial $55.22 with code | $6.50/mg | $5.52/mg with code | — | 15% off | ShopShop ↗ | |
| Lost Coast Aminos | 100score | 10 mg vial $25.20 with code | $2.80/mg | $2.52/mg with code | 38% below typical | 10% off | ShopShop ↗ | |
| True Peptide Labs | 92score | 5 mg vial $17.55 with code | $5.40/mg | $3.51/mg with code | 24% below typical | 35% off | ShopShop ↗ | |
| PeakForce Labs | 92score | 10 mg vial $29.25 with code | $2.93/mg | $2.93/mg with code | 35% below typical | 35% off | ShopShop ↗ | |
| Ascension Peptides | 90score | 2 mg vial $22 with code | $22/mg | $11/mg with code | — | 50% off | ShopShop ↗ | |
| Peptide Giants | 89score | 10 mg vial $42.75 with code | $4.50/mg | $4.27/mg with code | — | 5% off | ShopShop ↗ | |
| Rivn Research | 88score | 5 mg vial $33.14 with code | $7.80/mg | $6.63/mg with code | — | 15% off | ShopShop ↗ | |
| Alpha Peptides | 87score | 10 mg vial $35.63 with code | $3.96/mg | $3.56/mg with code | 12% below typical | 10% off | ShopShop ↗ | |
| My Amino Lab | 86score | 5 mg vial $31.50 with code | $7/mg | $6.30/mg with code | — | 10% off | ShopShop ↗ | |
| Rejuven8 Peptides | 85score | 2 mg vial $36.34 with code | $22.50/mg | $19.13/mg with code | — | 15% off | ShopShop ↗ | |
| NuLab Peptides | 84score | 2 mg vial $20.88 with code | $13.05/mg | $10.44/mg with code | — | 20% off | ShopShop ↗ | |
| Disguised Alpha | 83score | — | — | — | — | 10% off | ShopShop ↗ | |
| VISTARA LABS | 83score | — | — | — | — | 25% off | ShopShop ↗ | |
| Modern Research Peptides | 82score | 5 mg vial $21.59 with code | $7.20/mg | $4.32/mg with code | — | 40% off | ShopShop ↗ | |
| CertaPeptides | 79score | — | — | — | — | 10% off | ShopShop ↗ | |
| Ps Peptides | 77score | 10 mg vial $48.01 with code | $5.50/mg | $4.95/mg with code | — | 10% off | ShopShop ↗ | |
| Platinum Biolabs | 73score | 5 mg vial $39 with code | $10.40/mg | $7.80/mg with code | — | 25% off | ShopShop ↗ | |
| GenX Peptides | 68score | 2 mg vial $25.50 with code | $15/mg | $12.75/mg with code | — | 15% off | ShopShop ↗ | |
| Value Research Labs | 64score | 5 mg vial $27.99 with code | $7.00/mg | $5.60/mg with code | — | 20% off | ShopShop ↗ | |
| VMAX Peptides | 63score | 5 mg vial $26.91 with code | $5.98/mg | $5.38/mg with code | 16% below typical | 10% off | ShopShop ↗ | |
| Peptuvia | 63score | 10 mg vial $86.40 with code | $9.60/mg | $8.64/mg with code | — | 10% off | ShopShop ↗ | |
| Vitality Chems | 59score | 5 mg vial $48.94 with code | $11.00/mg | $9.79/mg with code | — | 11% off | ShopShop ↗ | |
| 99PurityPeptides | 43score | — | — | — | — | 10% off | ShopShop ↗ | |
| Sparta Labs | 31score | — | — | — | — | 15% off | ShopShop ↗ | |
| Helix Bio Chem | 16score | 10 mg vial $64.79 with code | $7.20/mg | $6.48/mg with code | — | 10% off | ShopShop ↗ | |
| XLR8 | 15score | 5 mg vial $47.99 with code | $12.00/mg | $9.60/mg with code | — | 20% off | ShopShop ↗ |
Where to buy Oxytocin: the short answer
What is the lowest Oxytocin price with a coupon code?
As of November 12, 2026, the lowest Oxytocin price PepAssess found with a coupon code is at Lost Coast Aminos: $2.52 per mg with code PEPASSESS (10% off; $2.80 per mg before the code). Prices are re-checked every night. Lost Coast Aminos coupon code
What is the best Oxytocin coupon code?
As of November 12, 2026, the biggest Oxytocin coupon code PepAssess has confirmed is PEPASSESS50OFF for 50% off at Ascension Peptides, which brings it to $11.00 per mg. PepAssess lists each code with its discount and the seller's Evidence Score, based on lab reports confirmed with the testing labs. Ascension Peptides coupon code
Where can I buy lab-tested Oxytocin?
As of November 12, 2026, PepAssess lists 24 online vendors selling Oxytocin. 9 of them publish a Oxytocin lab report that the testing lab confirmed on its own records, and 5 of those cover both purity (HPLC and mass spec) and toxicity (endotoxin or sterility). The highest-scoring vendors with a lab-confirmed Oxytocin report are BioLongevity Labs (100/100), True Peptide Labs (92/100) and PeakForce Labs (92/100). Compare all 24 Oxytocin vendors on PepAssess
What is the best Oxytocin vendor?
PepAssess ranks Oxytocin vendors by Evidence Score (0–100): what each vendor documents — lab reports confirmed by the labs, how often it tests, business transparency and buyer protection. As of November 12, 2026, the top-scoring Oxytocin vendors are BioLongevity Labs (100/100), Lost Coast Aminos (100/100) and True Peptide Labs (92/100) — 2 of them with a lab-confirmed Oxytocin report.
What is the cheapest Oxytocin per mg?
The lowest Oxytocin price PepAssess found is $2.80/mg at Lost Coast Aminos; the median across vendors is $7/mg (as of November 12, 2026). Among vendors with a lab-confirmed Oxytocin report, the lowest is $2.93/mg at PeakForce Labs. Prices come from each vendor's own store and exclude shipping and discounts.
Oxytocin cost per week
What one 10 mg vial of Oxytocin costs per week of research, at the lowest one-vial price with a coupon code: $25.20 at Lost Coast Aminos (code PEPASSESS, $2.52/mg), as of November 12, 2026.
| One vial used over | Cost per week |
|---|---|
| 2 weeks | $12.60 |
| 4 weeks | $6.30 |
| 8 weeks | $3.15 |
Lab-confirmed Oxytocin reports
11 of 24 sellers publish a Oxytocin lab report. 9 have one the testing lab confirmed on its own records; 5 of those cover both purity (HPLC + mass-spec identity) and toxicity (endotoxin or sterility). Those covering both are listed first, then by Evidence Score.
| Vendor | Purity | Toxicity | Latest | Per mg | Code | Score | |
|---|---|---|---|---|---|---|---|
 PeakForce Labs | Purity ✓↗ | Toxicity ✓↗ | Jul 2026 | $2.93/mg | 35% off | 92score | ShopShop ↗ |
| Ascension Peptides | Purity ✓↗ | Toxicity ✓↗ | Jun 2026 | $22/mg | 50% off | 90score | ShopShop ↗ |
 Disguised Alpha | Purity ✓↗ | Toxicity ✓↗ | Jul 2026 | — | 10% off | 83score | ShopShop ↗ |
 Ps Peptides | Purity ✓↗ | Toxicity ✓↗ | — | $5.50/mg | 10% off | 77score | ShopShop ↗ |
 Value Research Labs | Purity ✓↗ | Toxicity ✓↗ | Aug 2026 | $7.00/mg | 20% off | 64score | ShopShop ↗ |
| BioLongevity Labs | Purity ✓↗ | Toxicity – | Nov 2025 | $6.50/mg | 15% off | 100score | ShopShop ↗ |
 True Peptide Labs | Purity ✓↗ | Toxicity – | May 2026 | $5.40/mg | 35% off | 92score | ShopShop ↗ |
 My Amino Lab | Purity ✓↗ | Toxicity – | Sep 2026 | $7/mg | 10% off | 86score | ShopShop ↗ |
 Rejuven8 Peptides | Purity ✓↗ | Toxicity – | Aug 2026 | $22.50/mg | 15% off | 85score | ShopShop ↗ |
| # | Vendor | Doses (mg) | From | Best $/mg | Evidence score ⓘ | |
|---|---|---|---|---|---|---|
| 1 | 10 | from $64.97 ↗ | $6.50/mg | 100score | Shop | |
| 2 | 2 | from $44 ↗ | $22/mg | 90score | Shop | |
| 3 | 5 | from $38.99 ↗ | $7.80/mg | 88score | Shop | |
| 4 | 10 | from $28 ↗ | $2.80/mg | 100score | Shop | |
| 5 | 2 | from $45 ↗ | $22.50/mg | 85score | Shop | |
| 6 | — | — | — | 83score | Shop | |
| 7 | 2, 5 | from $29.99 ↗ | $7.20/mg | 82score | Shop | |
| 8 | 5 | from $35 ↗ | $7/mg | 86score | Shop | |
| 9 | 10 | from $39.59 ↗ | $3.96/mg | 87score | Shop | |
| 10 | 2, 5, 10 | from $19.99 ↗ | $4.50/mg | 89score | Shop | |
| 11 | 5 | from $34.99 ↗ | $7.00/mg | 64score | Shop | |
| 12 | 2 | from $26.10 ↗ | $13.05/mg | 84score | Shop | |
| 13 | 2, 5, 10 | — | — | 79score | Shop | |
| 14 | 5, 10 | from $39.99 ↗ | $5.50/mg | 77score | Shop | |
| 15 | 2, 4 | — | — | 83score | Shop | |
| 16 | 10 | — | — | 43score | Shop | |
| 17 | — | — | — | 31score | Shop | |
| 18 | 10 | from $71.99 ↗ | $7.20/mg | 16score | Shop | |
| 19 | 5 | from $59.99 ↗ | $12.00/mg | 15score | Shop | |
| 20 | 2 | from $30 ↗ | $15/mg | 68score | Shop | |
| 21 | — | from $27 ↗ | $5.40/mg | 92score | Shop | |
| 22 | 5 | from $29.90 ↗ | $5.98/mg | 63score | Shop | |
| 23 | 2, 5 | from $35.99 ↗ | $11.00/mg | 59score | Shop | |
| 24 | 10 | from $29.25 ↗ | $2.93/mg | 92score | Shop |
Prices come from each vendor's own public store data and may exclude shipping, discounts or bulk pricing. Research-use products; not medical advice.
About Oxytocin
What it is
Oxytocin is a nine-amino-acid hormone made in the hypothalamus. It drives uterine contractions in labor and milk release during breastfeeding, and acts in the brain as well.
How it works
- The same receptor is found in the breast and in the brain, which is why research extends to social behavior.
- Intranasal delivery is used experimentally to try to reach the brain; how much arrives is debated.
The compounds listed on this page are for research purposes only, not for human consumption. Not medical advice.
Related: Kisspeptin · PT-141 · Gonadorelin
Oxytocin: more questions people ask
Which Oxytocin vendors have lab reports confirmed by the testing lab?
9 as of November 12, 2026. Those whose confirmed reports cover both purity and toxicity: PeakForce Labs, Ascension Peptides, Disguised Alpha, Ps Peptides and Value Research Labs. PepAssess matches each report to the issuing lab's own public record, not the vendor's copy.
How can I tell if a Oxytocin certificate of analysis (COA) is real?
Look the report up in the testing lab's own records — most labs that test peptides publish a lookup by report ID, QR code or lot number. PepAssess does this for every Oxytocin report it finds: as of November 12, 2026, 9 of the 11 sellers publishing a Oxytocin report had one the lab confirmed.
How much does a vial of Oxytocin cost?
As of November 12, 2026, a 10 mg vial of Oxytocin costs a median $55 across the 80 sellers PepAssess found with one in stock (lowest $20.25); a 5 mg vial, a median $37.17 across 60 sellers (lowest $13.45); a 2 mg vial, a median $25.49 across 57 sellers (lowest $10.54). Each seller's lowest in-stock price for that size counts once; prices come from each seller's own store and exclude shipping and discounts.
Can you buy Oxytocin as a nasal spray or a pen?
Yes. As of November 12, 2026, 266 of the 24 Oxytocin sellers PepAssess lists sell a vial; 33 a nasal spray and 20 a pen or pre-filled form. Counts come from each store's own product names. A lab report covers the product and batch it names — check that it's for the form you're buying.
How do I know if a Oxytocin seller is legit?
Check what the seller can show. As of November 12, 2026, PepAssess checks every Oxytocin seller for three things: a Oxytocin lab report that the testing lab confirms on its own records (9 of 24), card payments, which let you dispute a charge (19 of 24), and a published street address — not a mailbox or registered agent (11 of 24). Each seller's PepAssess profile shows which of these it has.
Are there Oxytocin coupon codes?
Yes. PepAssess lists coupon codes for 24 vendors selling Oxytocin: BioLongevity Labs: PEPASSESS (15% off), Lost Coast Aminos: PEPASSESS (10% off), True Peptide Labs: peppasses (35% off), PeakForce Labs: PEPASSESS (35% off), Ascension Peptides: PEPASSESS50OFF (50% off), Peptide Giants: pepassess (5% off) and 18 more.
CertaPeptides products are for research use only and not for human consumption.