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    Nootropic PeptidePreclinical

    NA-Semax Dosage Guide: Protocols, Calculator & Safety

    Everything you need to know about NA-Semax dosing — protocols, safety, and where to buy.

    Half-Life

    ~20-30 minutes (intranasal, estimated from analog data)

    Dosage Calculator

    Calculate exact dosing for NA-Semax.

    Dosing Protocols

    Beginner

    Beginner protocol (intranasal)

    • Dose: 200-300 mcg/day total
    • Route: Intranasal spray (1-2 sprays per nostril)
    • Frequency: Once daily, AM
    • Duration: 14 days
    • Use case: First-time NA-Semax users; baseline cognitive enhancement research
    Standard

    Intermediate protocol

    • Dose: 400-600 mcg/day total
    • Route: Intranasal
    • Frequency: Twice daily (AM + early PM)
    • Duration: 14-21 days on / 7 days off
    • Use case: Stress-resilience research; ADHD-adjacent attention research
    Advanced

    Advanced protocol

    • Dose: 600-1,000 mcg/day total
    • Route: Intranasal or subcutaneous (research-only)
    • Frequency: 2-3 split doses
    • Duration: 14-30 days on / 14 days off
    • Stack with: Selank or P-21 for synergistic cognitive + anxiolytic profile

    Commonly Stacked With

    Synergizes well with Selank (NA-Semax for drive + Selank for calm = balanced "alert calm" state). Stacks with Cerebrolysin for neurotrophic amplification. Does not stack well with stimulants (additive over-arousal).

    Side Effects & Safety

    **No controlled human safety data exist for N-acetyl-Semax.** It is an unapproved research peptide; the notes below are anecdotal (user-reported) or extrapolated from intranasal parent Semax and should not be read as an established safety profile. Reported frequencies are unknown. - **Nasal / local irritation** - stinging, dryness, or mild congestion after intranasal spray; the most commonly reported effect. - **Headache** - transient and usually mild; reported more often at higher or late-day dosing. - **Irritability, overstimulation, or restlessness** - occasionally reported, consistent with an activating/stimulating peptide. - **Sleep disruption** - reported when dosed later in the day. Because no formal toxicology or human trials have been published for the acetylated analogue, unexpected or idiosyncratic reactions cannot be excluded. For research use only; not for human or veterinary consumption.

    Contraindications

    **Research-use-only; not for human or veterinary use.** No formal contraindication data exist for N-acetyl-Semax. As a precaution, this compound should not be used by: - Pregnant or breastfeeding individuals (no reproductive or developmental safety data). - Anyone with a known hypersensitivity to Semax, ACTH(4-10)-fragment peptides, or product excipients. - People with active psychiatric instability (e.g., mania or psychosis) or poorly controlled anxiety, given the activating/stimulatory profile of the parent peptide. - Anyone with significant nasal or sinus pathology if using the intranasal route. No human drug-interaction studies have been performed. The monoaminergic activity seen with parent Semax - potentiation of amphetamine-evoked dopamine release (Eremin 2005, PMID 16362768) - is a theoretical basis for caution when combined with stimulants or other monoaminergic/serotonergic agents.

    Check interactions with the Interaction Checker →

    Frequently Asked Questions

    What is the recommended NA-Semax dosage?

    Dosage for NA-Semax varies by protocol. Consult a qualified healthcare provider.

    How often should I take NA-Semax?

    Administration frequency depends on the specific protocol. Consult current research literature.

    Does NA-Semax need to be cycled?

    Cycling requirements depend on the protocol. Follow established research guidelines.

    What are NA-Semax side effects?

    **No controlled human safety data exist for N-acetyl-Semax.** It is an unapproved research peptide; the notes below are anecdotal (user-reported) or extrapolated from intranasal parent Semax and should not be read as an established safety profile. Reported frequencies are unknown. - **Nasal / local irritation** - stinging, dryness, or mild congestion after intranasal spray; the most commonly reported effect. - **Headache** - transient and usually mild; reported more often at higher or late-day dosing. - **Irritability, overstimulation, or restlessness** - occasionally reported, consistent with an activating/stimulating peptide. - **Sleep disruption** - reported when dosed later in the day. Because no formal toxicology or human trials have been published for the acetylated analogue, unexpected or idiosyncratic reactions cannot be excluded. For research use only; not for human or veterinary consumption.

    Where can I buy NA-Semax?

    Visit our vendor directory to find trusted sources for NA-Semax.

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