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Sexual/HormonalPreliminary grade

PT-141

Bremelanotide / Vyleesi

The FDA-approved melanocortin agonist for low sexual desire, real registered-trial evidence, with a notable nausea and blood-pressure profile.

Verdict, B · Viable

One of the few catalog compounds with an actual FDA approval and registered phase 3 data behind it. Held to a B by a real tolerability burden, nausea, transient blood-pressure rise and a cardiovascular contraindication, plus gray-market sourcing variance. Buy verified and respect the BP contraindication.

Overview

Bremelanotide (PT-141) is a melanocortin-4 receptor agonist FDA-approved in 2019 (Vyleesi) for acquired, generalized hypoactive sexual desire disorder in premenopausal women, on the strength of the RECONNECT phase 3 program. It acts centrally rather than vascularly, distinguishing it from PDE5 inhibitors. The approved evidence is solid; the practical drawbacks are common nausea, transient blood-pressure elevation (contraindicating uncontrolled hypertension and cardiovascular disease) and focal hyperpigmentation with repeated dosing.

PepScore Breakdown, the four axes

Evidence

35% weight
85/100

How strong is the published human science?

Human data depth32/40
Regulatory & registry status28/30
Reproducibility & consistency16/20
Mechanism characterized in humans9/10

Sourcing & COA

30% weightOur moat
68/100

Can a buyer obtain an independently-verified, high-purity version?, our proprietary layer.

Independent + portal-verifiable testing24/35
Method transparency (HPLC + MS + endotoxin/sterility, methods stated)17/25
Lot-matched + recent17/25
Independent corroboration10/15

Safety & Risk

25% weight
68/100

What is the real-world harm potential?

Documented AEs / toxicity26/40
Contraindication breadth16/25
Regulatory warnings15/20
Therapeutic index / margin11/15

Practicality

10% weight
71/100

How easy is it to actually run a verified version?

Verified-source availability26/35
Cost / value per cycle17/25
Reconstitution & administration18/25
Storage & stability10/15

Sources & Citations

Every claim cites a primary source. Citations are machine-audited against NCBI, see methodology.

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PepScore74/100 · B
Last gradedJune 28, 2026
Next re-grade triggerA broader indication or a clean multi-vendor COA sweep would move the grade; the core evidence is already FDA-grade.

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Educational only, not medical advice. PepScore is an educational research grade, not a prescription or dosing recommendation. Some vendor links are affiliate links, this never affects grades. Consult a licensed healthcare provider before using any compound.