--- title: "NA-Semax Dosage Guide [2026] | BodyHackGuide" url: https://www.bodyhackguide.co/guides/dosage/na-semax description: "Complete NA-Semax dosage guide with protocols, calculator, safety info, and where to buy. Updated for 2026." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Nootropic Peptide Preclinical # 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. https://www.bodyhackguide.co/tools/dosage ## 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 (https://www.bodyhackguide.co/compound/selank) or P-21 (https://www.bodyhackguide.co/compound/p21) for synergistic cognitive + anxiolytic profile ## Commonly Stacked With Synergizes well with Selank (https://www.bodyhackguide.co/compound/selank) (NA-Semax for drive + Selank for calm = balanced "alert calm" state). Stacks with Cerebrolysin (https://www.bodyhackguide.co/compound/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 → (https://www.bodyhackguide.co/tools/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? Where can I buy NA-Semax? Visit our vendor directory to compare the vendors we track and their Trust Scores. NA-Semax Full Profile Research data, mechanisms, and pricing https://www.bodyhackguide.co/compound/na-semax Interaction Checker Check drug & compound interactions https://www.bodyhackguide.co/tools/interaction-checker ## Related Dosage Guides All Guides (https://www.bodyhackguide.co/guides) ### Adalank Nootropic Peptide · Dosage Guide https://www.bodyhackguide.co/guides/dosage/adalank ### Adamax Nootropic Peptide · Dosage Guide https://www.bodyhackguide.co/guides/dosage/adamax Free 2026 Peptide Cheat Sheet (PDF) 38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers. Download Free (https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download) Image: BodyHackGuide (https://www.bodyhackguide.co/assets/bodyhackguide-logo-DOzZNUyh.webp) ### BodyHackGuide Your biohacking research hub: compound pricing, brain health protocols, dosing tools, and vendor reviews. support@bodyhackguide.co Join our Discord: https://discord.gg/Mhq5UdRYBA r/BodyHackGuide on Reddit: https://reddit.com/r/BodyHackGuide #### Explore - Compare prices: https://www.bodyhackguide.co/compare - Vendors: https://www.bodyhackguide.co/vendors - Deals: https://www.bodyhackguide.co/deals - Coupons: https://www.bodyhackguide.co/coupons - Nootropics: https://www.bodyhackguide.co/nootropics - Brain health: https://www.bodyhackguide.co/brain-health - Blog: https://www.bodyhackguide.co/blog - Guides: https://www.bodyhackguide.co/guides #### Tools - Reconstitution: https://www.bodyhackguide.co/tools/reconstitution - Half-life visualizer: https://www.bodyhackguide.co/tools/halflife - COA reader: https://www.bodyhackguide.co/tools/coa - Cost calculator: https://www.bodyhackguide.co/tools/cost-calculator - Stack builder: https://www.bodyhackguide.co/stack-builder - All tools: https://www.bodyhackguide.co/tools #### Trust & vendors - Vendor directory: https://www.bodyhackguide.co/vendors - Trust scorecard: https://www.bodyhackguide.co/vendors/scorecard - Vendor trust badge: https://www.bodyhackguide.co/vendors/get-vetted - Scoring methodology: https://www.bodyhackguide.co/vendors/methodology - Peptide cheat sheet: https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download #### Company - About: https://www.bodyhackguide.co/about - Affiliate disclosure: https://www.bodyhackguide.co/affiliate-disclosure - Editorial standards: https://www.bodyhackguide.co/editorial-standards - Creators: https://www.bodyhackguide.co/creators - Coaches: https://www.bodyhackguide.co/coaches - 1-on-1 coaching: https://www.bodyhackguide.co/coaching - Privacy: https://www.bodyhackguide.co/privacy - Terms: https://www.bodyhackguide.co/terms - Full site directory: https://www.bodyhackguide.co/site-directory **Affiliate Disclosure:** We rank every vendor on the same public, reproducible methodology (https://www.bodyhackguide.co/vendors/methodology), and we earn a commission from purchases made through some of our links at no extra cost to you. Full details in our affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). **Research Disclaimer:** All compounds listed are for laboratory and research purposes only. Not for human consumption. This site does not sell or ship any products. Always consult a qualified healthcare professional and comply with local regulations. © 2026 BodyHackGuide. All rights reserved. · Terms (https://www.bodyhackguide.co/terms) · Privacy (https://www.bodyhackguide.co/privacy) ## Structured data ```json [ { "@context": "https://schema.org", "@type": "Article", "headline": "NA-Semax Dosage Guide [2026]", "description": "Complete NA-Semax dosage guide with protocols, calculator, safety info, and where to buy. 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Consult a qualified healthcare provider." } }, { "@type": "Question", "name": "How often should I take NA-Semax?", "acceptedAnswer": { "@type": "Answer", "text": "Administration frequency depends on the specific protocol. Consult current research literature." } }, { "@type": "Question", "name": "Does NA-Semax need to be cycled?", "acceptedAnswer": { "@type": "Answer", "text": "Cycling requirements depend on the protocol. Follow established research guidelines." } }, { "@type": "Question", "name": "What are NA-Semax side effects?", "acceptedAnswer": { "@type": "Answer", "text": "**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.\n\n- **Nasal / local irritation** - stinging, dryness, or mild congestion after intranasal spray; the most commonly reported effect.\n- **Headache** - transient and usually mild; reported more often at higher or late-day dosing.\n- **Irritability, overstimulation, or restlessness** - occasionally reported, consistent with an activating/stimulating peptide.\n- **Sleep disruption** - reported when dosed later in the day.\n\nBecause no formal toxicology or human trials have been published for the acetylated analogue, unexpected or idiosyncratic reactions cannot be excluded. 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