PT-141 (bremelanotide) peptide (10 mg vial)

In brief: ALTA PEPTIDES supplies PT-141 (Bremelanotide) as a 10 mg lyophilised vial for £22.99 (£2.30/mg), tested per lot by an independent UK laboratory with the certificate of analysis published, held in UK stock and dispatched the same working day before 1pm. Supplied for laboratory research only, not for human consumption.

What is PT-141?

PT-141, or bremelanotide, is a cyclic heptapeptide derived from Melanotan II that acts as an agonist at melanocortin receptors, principally MC3 and MC4, in the central nervous system. It is licensed in the United States (as Vyleesi) for a specific indication and is not licensed in the UK or EU. Supplied here at 99%+ HPLC purity in a 10 mg sealed vial for laboratory research.

What the research covers

PT-141 has been through controlled human trials in its licensed indication, which report central rather than vascular action and adverse effects including nausea, flushing and transient blood-pressure increases. Preclinical work examines melanocortin signalling more broadly. It is the melanocortin agonist with the most human data.

Buying PT-141 in the UK

The PT-141 peptide is held in UK stock as a lot-tested 10 mg lyophilised vial, tested by an independent UK laboratory with the certificate of analysis published before release, and dispatched the same working day before 1pm. Supplied strictly for laboratory research.

Legal position

Not controlled in the UK. Licensed as a prescription medicine in the USA, unlicensed in the UK. Listed only with written legal advice and supplied strictly as a laboratory reagent, not for human use.

Sizes and pricing

• PT-141 10mg: £22.99 (£2.30/mg). SKU PT141-10.

Prices include VAT. Shipping is £4.95 by Royal Mail Tracked 24, free on orders over £100, and sealed items can be returned within 14 days. Ships from UK stock with the lot certificate for the vial you receive.

Quality and testing

Each lot of PT-141 is sent to an independent UK laboratory before release for identity by mass spectrometry, purity by HPLC, residual solvents and bacterial endotoxin. The lot number on the vial label matches the certificate on our certificates page, and no lot is released for sale until the certificate is in hand. Specification: ≥ 99% (HPLC), supplied as lyophilised powder, 2 ml glass vial, sealed, 10 mg per vial.

Reconstitution and handling

PT-141 arrives as a lyophilised cake under an aluminium crimp seal. Let the vial reach room temperature before opening so that condensation does not form on the powder. Swab the stopper with an alcohol swab, draw the chosen volume of bacteriostatic water with a sterile syringe, and add it slowly down the inside wall of the vial rather than onto the powder. Swirl gently until clear; never shake, which can denature the peptide. Label the vial with the date and concentration. The peptide calculator converts vial amount and diluent volume into concentration, millilitres and U-100 syringe units for any target amount. Sealed vial: -20 °C, protected from light. Reconstituted: 2 to 8 °C, use within 4 weeks.

Lot traceability

Every PT-141 vial carries a printed lot number and expiry. The same lot number appears on the certificate of analysis for that batch, which names the testing laboratory and the report number so it can be verified directly. If the number on your vial does not match a certificate on our site, contact support before using it. Certificates are kept online for the life of the product plus two years.

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