Buy PT-141 (Bremelanotide) in Canada
PT-141 grew out of Melanotan II research and then went its own way. We stock PT-141, also known as bremelanotide, in sealed lyophilised vials. This guide covers what the peptide is, what the research looks at, and how to buy PT-141 Canada-wide.
View product →At a glance: Vistara Labs stocks PT-141 in 10 mg vials and as a ready-mixed nasal spray, independently tested, with a certificate of analysis on our Lab Reports page, shipped from within Canada by Canada Post Xpresspost, with same-business-day dispatch on orders before 3 pm Pacific. We deliver to every province, including Ontario, Quebec, British Columbia and Alberta.
What PT-141 is
PT-141 is the development code for bremelanotide, a synthetic cyclic heptapeptide: seven amino acids, with a ring built into the chain. It is an analogue of alpha-melanocyte-stimulating hormone (alpha-MSH), which belongs to the melanocortins, a family of signalling peptides that act on five receptors, MC1 to MC5.
PT-141 is a melanocortin-receptor agonist with high affinity for the melanocortin 4 (MC4) receptor, and it also acts at the MC3 receptor. Both receptors sit mainly in the central nervous system, which is where the research on PT-141 is centred.
It is also a metabolite of Melanotan II, though unlike its parent it is not studied as a pigmentation compound. What interests researchers is its action on central receptors rather than on blood flow. You will see it written PT-141, PT141 and PT 141, and in clinical papers as bremelanotide; all four refer to the same peptide.
What the research covers
Published work on PT-141 sits within melanocortin research, much of it at the level of receptors and brain pathways, and falls into four broad areas.
- Melanocortin-receptor signalling. How PT-141 binds and activates the melanocortin receptors, the MC4 receptor in particular.
- Central nervous system pathways. The brain pathways studied in sexual-response research, which is where most of the PT-141 literature sits.
- Neuroendocrine research. The melanocortin system links brain signalling to hormonal regulation, so PT-141 also appears in wider neuroendocrine work.
- Comparative work. Studies that set PT-141 beside Melanotan II, alpha-MSH and other melanocortin analogues, receptor by receptor.
The same molecule was developed clinically under the name bremelanotide and approved as a prescription medicine in the United States in 2019 (Dhillon and Keam, Drugs, 2019, PMID 31429064). The PT-141 we supply is a research material, sold for laboratory use.
PT-141 and Melanotan II
The two peptides are close relatives that answer different research questions. How one led to the other is a story in its own right, told in Melanotan II: the clinical history and the PT-141 connection. Side by side, the practical differences come down to three things.
- Structure. Both are built from the same seven amino acids; PT-141 ends in a free acid where Melanotan II ends in an amide.
- Research focus. Melanotan II is best known for pigmentation research through the MC1 receptor in the skin, while PT-141 is studied for central melanocortin pathways.
- Format. We supply Melanotan II as a vial and as a pre-mixed nasal spray, and PT-141 as a lyophilised vial and as a pre-mixed PT-141 nasal spray; each comes singly or in packs of ten.
Oxytocin is the other peptide in the same research category on our site. It is a nine-amino-acid hormone with a large research literature of its own, and our oxytocin nasal spray research article walks through the nasal work. We supply oxytocin both as a lyophilised vial and as a pre-mixed nasal spray.
Where to buy PT-141 Canada-wide
We are a Canadian peptide supplier, and ordering PT-141 works like every other vial on the site.
- A single vial or a pack of ten. PT-141 comes as a single lyophilised vial or as a pack of ten for a longer series of experiments, both on the same product page.
- Freeze-dried and sealed. The lyophilised (freeze-dried) form keeps a peptide stable through storage and shipping, and an unopened vial keeps best cold, dry and away from light.
- Bacteriostatic water on the same order. We also stock the bacteriostatic water PT-141 is reconstituted with, so the two can go in one order.
- Lab reports. Certificates of analysis from independent laboratories are published for each compound on our lab reports page, with purity above 99 percent.
- Tracked, discreet delivery. Orders travel to every province by tracked Canada Post, in discreet packaging.
- Questions are welcome. A real person on our team answers email at [email protected], whether the question is about PT-141 or an order.
Vistara Labs stocks PT-141 as a lyophilised powder, shipped from within Canada to every province.
Frequently asked questions
Is PT-141 the same as bremelanotide?
Yes. PT-141 is the development code and bremelanotide the generic name of the same peptide, and research papers often use the two side by side.
How is PT-141 different from Melanotan II?
PT-141 is a metabolite of Melanotan II, and structurally the two differ only at one end of the chain. PT-141 is studied for central melanocortin pathways, while Melanotan II is best known for pigmentation research.
How is PT-141 supplied?
As a lyophilised powder in a sealed vial, reconstituted with bacteriostatic water for laboratory handling, or as a ready-mixed PT-141 nasal spray that needs no reconstitution. Our PT-141 reconstitution guide has the details.
Can you buy PT-141 in Canada?
Yes, as a research material from Canadian peptide suppliers, including Vistara Labs. Every order ships from within Canada, so there is no customs step.
All products supplied by Vistara Labs are intended for laboratory research use only. They are not drugs, are not approved for human or veterinary use, and are not intended to diagnose, treat, cure or prevent any condition. Nothing on this page constitutes medical advice or guidance for use in humans.
