Melanotan II vs PT-141
Well Studied vs FDA Approved
monitor Researched · 90% Both are melanocortin agonists; combining risks excessive activation and side effects.
Molecular Data
Melanotan II PT-141
Half-life ~2 hours ~2.7 hours
Type Synthetic alpha-MSH analog Melanocortin receptor agonist
Key Benefits
Melanotan II
01 Rapid tanning without UV exposure
02 Enhanced sexual function and libido
03 Appetite suppression
04 Improved mood via melanocortin activation
05 Photoprotection through increased melanin
PT-141
01 FDA-approved pharmaceutical route
02 Predictable absorption profile
03 Effective for both male and female sexual dysfunction
04 Works within 45 minutes
05 Effective in PDE5 inhibitor-resistant cases
06 Central mechanism (not dependent on blood flow)
Dosing Protocols
Melanotan II
Loading: Start 0.25mg daily, increase to 0.5-1mg; Maintenance: 0.5-1mg 2-3x weekly / Loading phase: Daily for first week, then tanning maintenance 2-3x weekly or as needed for sexual enhancement
Initial loading phase 0.25mg 1x daily
Tanning maintenance 0.5-1mg 2-3x weekly
Sexual enhancement 0.5-1mg As needed
Minimal side effects 0.1-0.25mg Every other day
Photoprotection 0.5mg 2x weekly
PT-141
Women: 1.75mg (FDA-approved); Men: 1-2mg; Start 0.5mg test dose for tolerance / As needed before sexual activity; max 1 dose per 24 hours
Female HSDD (FDA-approved) 1.75mg As needed, max 1 dose/24hr
Male Erectile Dysfunction 1-2mg As needed, 45-60min before activity
Female Arousal Disorder 0.75-1.25mg As needed, max 1 dose/24hr
Low Starting Dose 0.5mg Test dose for tolerance assessment
Side Effects
Melanotan II
Nausea (pre-treatment with antiemetics recommended)
Facial flushing
Temporary blood pressure elevation
Fatigue
Spontaneous erections
PT-141
Nausea (40%)
Flushing (20%)
Headache (11%)
Injection site reactions
Contraindications
History of melanoma or dysplastic nevi
Pregnancy or breastfeeding
Cardiovascular conditions
Uncontrolled hypertension
Uncontrolled hypertension
Cardiovascular disease
Use of nitrate medications
Pregnancy or breastfeeding
Research Evidence
Melanotan II PT-141
Status Well Studied FDA Approved
References 4 studies 4 studies
Latest 2024 2022
FDA Approved No Yes
This comparison is for educational and research purposes only. Consult a healthcare professional before use.