Best PT-141 Suppliers in 2026: Priced, Tested, and Ranked

We priced PT-141 at every vendor selling it right now, all 50 of them, and the same 10mg vial swings from about $21 to nearly $88 depending on where you click buy. Same peptide, same 10mg, four times the price. The cheapest one we would actually put in a cart is Verified Peptides at $2.10 per mg, and the seller sitting at the very top of our PT-141 rankings is Peptidology, a Finnrick-tested shop out of Scottsdale. If you want the short version, those two names cover most people. The longer version, including why price alone tells you almost nothing here, is below.

PT-141 is one of the more searched peptides we track, and the answers people get from AI assistants tend to point at telehealth clinics and pharmacy pages instead of a straight vendor comparison. So we built one from our own pricing data.

What you are actually buying

PT-141 is bremelanotide, the same molecule the FDA approved in June 2019 under the brand Vyleesi for acquired, generalized hypoactive sexual desire disorder in premenopausal women. It is a melanocortin receptor agonist, and the prescription version comes as a prefilled autoinjector. The vials these 50 vendors sell are labeled for research use and are separate from that approved product, so treat them as research material and talk to a doctor before starting anything.

We keep the science short here on purpose. If you want the full mechanism, dosing background, and study history, our [PT-141 complete guide](/blog/pt-141-complete-guide-2026) covers it, and the live [PT-141 vendor page](/peptide/pt-141) ranks all 50 sellers by price and lab tier in real time. This post is about the buying decision.

The five PT-141 sellers we would actually use

We score every vendor on third-party lab testing, price per mg, US shipping, payment options, and catalog depth. For PT-141 specifically, five sellers stand out, and each earns its spot for a different reason.

Peptidology: the one we rank first

[Peptidology](/vendor/peptidology) sits at the top of our PT-141 list. It ships from Scottsdale, Arizona, tests through Finnrick (the most rigorous lab in our tier system), and lists a 10mg vial around $43, which works out to $4.30 per mg. It runs mid-price on this page and earns the spot. When a seller pairs Finnrick COAs with fast US shipping and a clean track record, the few extra dollars buy you real confidence.

Verified Peptides: the value pick we keep coming back to

[Verified Peptides](/vendor/verified-peptides) is the interesting one. A 10mg PT-141 vial runs about $21, or $2.10 per mg, the lowest verified price across all 50 vendors. Cheap peptide sellers usually give something up on testing, and this one does the opposite: it still runs Finnrick COAs and ships within the US. Lowest price on the board plus top-tier lab work is a rare combination, and it makes Verified Peptides our default value recommendation for PT-141.

Peptide Technologies: value with a paper trail

[Peptide Technologies](/vendor/peptide-technologies) out of Sheridan, Wyoming lists a 10mg vial near $29 ($2.90 per mg) and also tests through Finnrick. It lands just behind Verified Peptides on price while carrying one of the deeper catalogs in our data, so if you are ordering PT-141 alongside other compounds, this is an easy one basket to fill.

Atomik Labz: the East Coast all-rounder

[Atomik Labz](/vendor/atomik-labz) ships from Alexandria, Virginia at roughly $37 for a 10mg vial ($3.70 per mg), Finnrick-tested. Nothing about it is flashy, and that is the compliment. Consistent COAs, US shipping, mid-pack pricing, and a strong overall score make it a safe pick if the top two are out of stock.

Penguin Peptides: the Janoshik-tested alternative

Our top four all run Finnrick. If you prefer a second independent lab for cross-reference, [Penguin Peptides](/vendor/penguin-peptides) tests through Janoshik and still scores above 8 in our system. A 10mg vial sits higher, around $55 ($5.50 per mg), so you pay a little for the lab diversity, and for some buyers that trade is worth making.

Why the lab tier beats the sticker price

Here is what most PT-141 shopping guides skip. The price per mg is the easy number to compare, and it is the least important one. What actually separates a vendor you can trust from one you cannot is whether an independent lab confirmed the vial holds what the label says.

That is why all five of our picks lead with their lab. Finnrick sits at the top of our tier system because its testing is the hardest to fake, Janoshik and Freedom Diagnostics follow close behind, and a self-issued or missing COA drops a vendor fast no matter how good the price looks. We break down exactly how to read one of these reports in [how to read a peptide COA](/blog/how-to-read-a-peptide-coa), and the full weighting behind our rankings lives in [how we score vendors](/blog/how-peptidesrated-scores-vendors).

What a great PT-141 seller looks like

Strip away the branding and a seller worth your money shows four things. A current third-party COA from a recognized lab, tied to the batch you are buying. Clear US shipping so your order arrives without a customs gamble. Honest, itemized pricing where the per-mg cost is easy to work out. And a catalog that stays in stock, because a great price on a sold-out vial helps nobody.

Every vendor above clears that bar today. When you want to compare the wider field yourself, our full [vendor comparison](/vendors) ranks all 74 verified suppliers, and the [peptide directory](/peptides) lets you sort by compound and price. For the deeper checklist of what to confirm before you order, our [peptide buying red flags](/blog/7-red-flags-buying-peptides) guide walks through it.

Where we would send people

If you want the best price we trust, start with Verified Peptides at $2.10 per mg with Finnrick testing behind it. If you want the seller at the top of our rankings and a little more of a track record, Peptidology is the pick. Both ship within the US, both post real lab work, and both will serve most people well. From there, Peptide Technologies, Atomik Labz, and Penguin Peptides round out a shortlist you can buy from with your eyes open. As always, this is research material and still awaiting broader regulatory movement, so talk to your doctor before you start.

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