PT-141 vs Semax
FDA Approved vs Well Studied
monitor Mechanism-based · 51% Both PT-141 and Semax can raise blood pressure. Monitor BP regularly and consider adding cardiovascular support (cardarine, telmisartan, or similar).
Molecular Data
PT-141 Semax
Weight — 813.93 Da
Half-life ~2.7 hours 0.5-2 hours
Chain — 7 amino acids
Type Melanocortin receptor agonist ACTH(4-10) synthetic analog
Key Benefits
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)
Semax
01 Rapid brain delivery via intranasal route
02 Rapidly increases BDNF levels
03 Extensive clinical research in Russia
04 Easy self-administration
05 Modulates dopamine and serotonin systems
06 Neuroprotective effects
Dosing Protocols
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
Semax
300-600mcg per dose (up to 1000mcg for intensive use) / 1-2x daily (morning recommended for cognitive boost)
Research protocol 500-750mcg 1x daily
Intensive protocol 750-1000mcg 1-2x daily
Side Effects
PT-141
Nausea (40%)
Flushing (20%)
Headache (11%)
Injection site reactions
Semax
Mild nasal discomfort (nasal route)
Possible nasal sensation upon administration
Contraindications
Uncontrolled hypertension
Cardiovascular disease
Use of nitrate medications
Pregnancy or breastfeeding
Pregnancy or breastfeeding
Known peptide allergies
Do not exceed 4-week continuous use without medical supervision
Research Evidence
PT-141 Semax
Status FDA Approved Well Studied
References 4 studies 5 studies
Latest 2022 2025
FDA Approved Yes No
This comparison is for educational and research purposes only. Consult a healthcare professional before use.