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Spray · Skin & Melanocortin

PT-141 Spray, the spray format explained

Ready-mixed PT-141 spray; no reconstitution needed. Purgo's product name says 30mg while its description says 15mg.

Skin & MelanocortinCAS 189691-06-3SprayUpdated 2026-11-09
Original illustration for PT-141 Spray research notes: abstract molecular artwork in orange and teal
Original illustration by USA Peptide Vendors; artistic, not a structural model.

Spray vs lyophilized vial

PT-141 SprayPT-141 (Bremelanotide) vial
FormSprayLyophilized powder
What's in itReady-mixed PT-141 spray; no reconstitution needed.Cyclic melanocortin receptor agonist; Melanotan II with a free-acid C-terminus. Bremelanotide acts mainly at central MC4R and was approved for hypoactive sexual desire disorder after two phase 3 trials.
PrepReady to use; no reconstitutionReconstituted with bacteriostatic or sterile water
Published dataNone specific to this formatClinical: phase 2 and phase 3 trials
Analyte CAS189691-06-3189691-06-3

Full chemistry, sequence and sourcing for the vial: PT-141 (Bremelanotide) →

About this format

Purgo's product name says 30mg while its description says 15mg. Ask which strength the COA covers.

Format checks

  • The spray carries the same analyte as PT-141 (Bremelanotide) vials; check that the COA covers this format's lot, not a vial lot.
  • 37 of the 112 vendors in our directory list PT-141; 19 of those name the lab that tests it.

Mechanism of PT-141 (Bremelanotide)

Evidence level: Clinical: phase 2 and phase 3 trials. This diagram is for PT-141 (Bremelanotide) itself; the spray hasn't been studied separately. All mechanism maps

PT-141 mechanism diagramCentral melanocortin (MC4R) agonism and sexual response. Targets: MC4R. Site of action: Central melanocortin pathways. Effects reported: Erectile response, Sexual desire ↑.PT-141 mechanism mapCentral melanocortin (MC4R) agonism and sexual responsePT-141bremelanotideMC4Ralso MC3R [1]Central melanocortin pathways[1]Erectile responsemen, phase 2 [2]Sexual desire ↑women, phase 3 [3]Evidence: Clinical: phase 2 and phase 3 trials. Numbers in brackets refer to the citedsources.usapeptidevendors.com · Research Use OnlyRECEPTORSITE OF ACTIONEFFECTS REPORTED
Approved as a pharmaceutical injection; research-catalog sprays are a different formulation. Open SVG
  1. Molinoff PB et al. PT-141: a melanocortin agonist for the treatment of sexual dysfunction. Ann N Y Acad Sci. 2003;994:96-102.
  2. Diamond LE et al. Double-blind, placebo-controlled evaluation of the safety, pharmacokinetic properties and pharmacodynamic effects of intranasal PT-141, a melanocortin receptor agonist, in healthy males and patients with mild-to-moderate erectile dysfunction. Int J Impot Res. 2004;16:51-9.
  3. Kingsberg SA et al. Bremelanotide for the Treatment of Hypoactive Sexual Desire Disorder: Two Randomized Phase 3 Trials. Obstet Gynecol. 2019;134:899-908.

FAQ

What is PT-141 Spray?

Ready-mixed PT-141 spray; no reconstitution needed. Purgo's product name says 30mg while its description says 15mg. Ask which strength the COA covers.

How is PT-141 Spray different from a PT-141 (Bremelanotide) vial?

Ready-mixed PT-141 spray; no reconstitution needed. A lyophilized vial is reconstituted by the lab; the spray is pre-made, so stability and per-unit content depend on the vendor's formulation.

Where can US labs buy PT-141 Spray?

Purgo Labs stocks it as “PT-141 Spray”; code usapeptidevendors takes 25% off at checkout. This page also lists the best-documented second vendor from our 112-vendor directory.

Is research-grade PT-141 Spray for human use?

No. Vendor material is sold for Research Use Only, not for human or veterinary use.