What is the half-life of NA-Semax?

NA-Semax has a half-life of Unknown, which is why it's typically administered As needed for optimal therapeutic effect.

How do I reconstitute NA-Semax?

Add bacteriostatic water to the peptide vial slowly down the side. Typical reconstitution uses 2-3ml of water for a 5mg vial. Gently swirl, do not shake.

What is the half-life of NA-Semax?

NA-Semax has a half-life of Unknown, which is why it's typically administered As needed for optimal therapeutic effect.

How do I reconstitute NA-Semax?

Add bacteriostatic water to the peptide vial slowly down the side. Typical reconstitution uses 2-3ml of water for a 5mg vial. Gently swirl, do not shake.

Healing & Recovery

Preclinical

NA-Semax

Also known as: N-Acetyl Semax, Acetylated Semax, NA-Semax Amidate

Overview

Key Facts

Primary Goal: Research and therapeutic applications of NA-Semax

Same melanocortin receptor (MC3/MC4) and BDNF-promoting mechanisms as Semax. N-acetyl group provides resistance to aminopeptidase degradation at the N-terminus.

Dosing Information

Half-Life

~20-60 minutes (extended over parent Semax)

Typical Dose

100–600 mcg

Frequency

1-2 times daily

Cycle Length

10-30 days

Administration Routes:

subcutaneous

Benefits

Enhanced BDNF upregulation compared to standard Semax
Longer-lasting nootropic and neuroprotective effects
Improved focus, mental clarity, and verbal fluency
Greater metabolic stability and CNS penetration
Potential for more sustained neuroprotection in ischemic conditions

Side Effects

Mild nasal irritation with intranasal useuncommonmild

Headache, particularly at higher dosesuncommonmild

Anecdotal reports of irritability or overstimulationuncommonmild

Hair shedding reported at high doses (similar to parent compound)uncommonmild

Mechanism of Action

Same melanocortin receptor (MC3/MC4) and BDNF-promoting mechanisms as Semax

N-acetyl group provides resistance to aminopeptidase degradation at the N-terminus

Enhanced blood-brain barrier penetration increases central neurotrophic effects

Modulates dopaminergic and serotonergic neurotransmission with improved pharmacokinetic profile

Contraindications

Do not use this peptide if any of the following apply:

Active seizure disorders
Pregnancy or breastfeeding
Known hypersensitivity to ACTH-derived peptides

Storage & Reconstitution

Unreconstituted (Powder)

Temperature2–8°C (36–46°F) or -20°C (-4°F) for long-term

DurationUp to 3 months

Reconstituted (Mixed)

Temperature2–8°C (36–46°F)

Duration2-4 weeks

Note: Protect from light. Do not freeze reconstituted solution.

Research Summary

Preclinical

NA-Semax builds on the extensive Russian clinical research behind standard Semax by incorporating an N-acetyl modification for improved pharmacokinetics. Preclinical studies suggest that the acetylated form may produce greater BDNF elevation per dose compared to unmodified Semax. While it lacks the independent clinical trial data of its parent compound, the pharmacological rationale for the modification is well-established, and it has become one of the most popular nootropic peptides in research communities seeking enhanced potency over standard Semax.

Frequently Asked Questions

Common questions about NA-Semax

UK-Specific Information

Exclusive data points and guidance for UK residents using NA-Semax

UK Lab Testing

Recommended labs: Medichecks, Thriva (£89-£149 for peptide safety panel)

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