NA Semax Amidate vs PT-141
Well Studied vs FDA Approved
monitor Mechanism-based · 51% Both NA Semax Amidate and PT-141 can raise blood pressure. Monitor BP regularly and consider adding cardiovascular support (cardarine, telmisartan, or similar).
Molecular Data
NA Semax Amidate PT-141
Weight 1,007.16 Da —
Half-life 2-10 hours ~2.7 hours
Chain 7 amino acids —
Type Modified ACTH analog Melanocortin receptor agonist
Key Benefits
NA Semax Amidate
01 Direct brain access via olfactory nerves
02 Rapid onset (15-30 minutes)
03 Proven cognitive efficacy
04 Extended half-life vs standard Semax
05 Enhanced BDNF upregulation
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
NA Semax Amidate
600-1200mcg per administration / 1-2x daily for 10-30 days
Research protocol 200mcg 1x daily
Neuroprotection study 400mcg 1x daily
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
NA Semax Amidate
Mild nasal irritation (intranasal)
Slight headache initially
PT-141
Nausea (40%)
Flushing (20%)
Headache (11%)
Injection site reactions
Contraindications
Not recommended during pregnancy
Active nasal congestion or sinus infection
Individuals on neurotransmitter-affecting medications without consultation
Uncontrolled hypertension
Cardiovascular disease
Use of nitrate medications
Pregnancy or breastfeeding
Research Evidence
NA Semax Amidate PT-141
Status Well Studied FDA Approved
References 5 studies 4 studies
Latest 2025 2022
FDA Approved No Yes
This comparison is for educational and research purposes only. Consult a healthcare professional before use.