$25
Vendor catalog Vendor flaggedLive data
Availability
In stock
Last checked
51 minutes ago
All compounds0%
Melanocortin peptide
Live dataPT-141
Tanning & libidoReproductive & hormonal
A synthetic cyclic heptapeptide melanocortin-receptor agonist.
BremelanotideVyleesiPT141
Observed median price
$47
16
Active listings
3 · 99.9%
Independent lab tests
$25–$265
Observed price range
4
Known aliases
Read from the certificate, not re-measured by VialGrade.
Understand this compound
What is PT-141?
FDA-approved moleculea.k.a. Bremelanotide, VyleesiBremelanotide, a melanocortin peptide studied in libido and sexual-function research.
Tanning & libidoReproductive & hormonal
⚠
Good to know: FDA approval is specific to premenopausal women with acquired, generalized HSDD; use in men or for other purposes is off-label, and it commonly causes nausea and can raise blood pressure.
How does PT-141 work?
A cyclic heptapeptide melanocortin agonist, derived from the same alpha-MSH scaffold as the melanotans, that selectively activates MC3/MC4 receptors in the hypothalamus and limbic system to act on central sexual-desire pathways rather than local blood flow.
Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.
What is PT-141 researched for?
Studied for hypoactive sexual desire disorder in women and, via central mechanisms, erectile dysfunction in men.
- Tanning & libidoStudied in melanocortin research — skin pigmentation and related pathways.
- Reproductive & hormonalStudied in reproductive-hormone and endocrine-axis research.
How far has the research gone?
FDA-approved (for HSDD in premenopausal women) — approved as Vyleesi in 2019 following two Phase 3 trials.
Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.
What should I check before buying?
- Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
- Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
- Vendor reputation. See how the vendor is talked about in the community before trusting a new name.
Research context only — VialGrade never gives dosing, medical, or human-use guidance.
US legal status
Research-use-only — not FDA-approved
Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.
Read the full US legal overview →General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.
Compare by real cost
Cheapest PT-141, by price per mg
Vials come in different sizes, so the sticker price lies. This ranks every listing by what a milligram actually costs — with independent test purity where we have it.
| # | Vendor | Size | Price | Per mg | Tested purity | Real $/active mg | |
|---|---|---|---|---|---|---|---|
| 1 | Umbrella Labs | 40mg total | $130 | $3.25/mg | — | $3.25/mgbest value | View |
| 2 | Bluum Peptides | 10mg total | $35 | $3.50/mg | — | $3.50/mg | View |
| 3 | Peptide Pros | 10mg total | $38 | $3.75/mg | — | $3.75/mg | View |
| 4 | Modern Aminos | 10mg total | $41 | $4.10/mg | — | $4.10/mg | View |
| 5 | Felix Chemical Supply | 10mg total | $43 | $4.30/mg | — | $4.30/mg | View |
| 6 | Ez Peptides | 10mg total | $44 | $4.40/mg | 99.9% | $4.40/mg | View |
| 7 | Simple Peptide | 10mg total | $45 | $4.50/mg | — | $4.50/mg | View |
| 8 | Swiss Chems | 10mg total | $50 | $5.00/mg | — | $5.00/mg | View |
| 9 | Sports Technology Labs | 10mg total | $52 | $5.20/mg | 99.9% | $5.20/mg | View |
| 10 | Chameleon Peptides | 10mg total | $265 | $26.5/mg | 99.9% | $26.5/mg | View |
Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg.
Current market
All PT-141 listings
$35
$3.50/mg
-20% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
8 days ago
$38
$3.75/mg
-14% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
51 minutes ago
$41
$4.10/mg
-6% vs median/mg
Testing unverified Compound: 3 COAsLive data
Availability
In stock
Last checked
1 hour ago
$43
$4.30/mg
-1% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
36 minutes ago
$44
$4.40/mg
+1% vs median/mg
Independent test Independently testedLive data
Availability
In stock
Last checked
36 minutes ago
$45
Testing unverified Vendor flaggedLive data
Availability
Unavailable
Last checked
21 minutes ago
$45
$4.50/mg
+3% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
2 hours ago
$50
Vendor catalog Vendor flaggedLive data
Availability
In stock
Last checked
51 minutes ago
$50
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
21 minutes ago
$50
$5.00/mg
+15% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
2 hours ago
$52
$5.20/mg
+20% vs median/mg
Independent test Independently testedLive data
Availability
In stock
Last checked
2 hours ago
$57
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
2 hours ago
$73
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
8 days ago
PT-141 BREMELANOTIDE PEPTIDE 40MG LIQUID SPRAY 15ML BOTTLE (1MG/2 SPRAYS, 40MG TOTAL) 40MGUmbrella Labs
C-Grade C-
Tanning & libidoReproductive & hormonal
$130
$3.25/mg
-25% vs median/mg
Vendor catalog Compound: 3 COAsLive data
Availability
In stock
Last checked
1 hour ago
$265
$26.5/mg
+508% vs median/mg
Independent test Independently testedLive data
Availability
In stock
Last checked
36 minutes ago
Commonly researched together
Often stacked with PT-141
Compounds the research community frequently discusses alongside PT-141. Not a protocol or a recommendation — a starting point for what to read about next.
Independent testing
PT-141 — independent lab tests
Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.
How does this data get here?
Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.
Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.
We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.
What a certificate does & doesn’t prove
Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.
Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.
99.9%
highest tested purity
Tested batches
Batch test records for PT-141
The full test history for one batch — who picked the sample, who tested it, and what came back. It describes the vials that were tested, never every vial they sold.
Research notes aren’t product proof
Research summaries describe published literature and market data only. They do not establish the identity, quality, safety, or legal status of any listed physical product.