Nootropic & Neuropeptides
Semax
Met-Glu-His-Phe-Pro-Gly-Pro
Also known as: ACTH(4-10) analog
Mechanism & research context
Synthetic heptapeptide analog of an ACTH fragment, approved in Russia for stroke and cognitive indications. Small human neuroimaging studies exist; no Western regulatory approval.
Safety flags
0 flagsNo curator-recorded safety flags for this entry. Absence of recorded flags is not evidence of safety. Many peptides lack adequate human data.
Research papers
16 recordsCitation links route to PubMed, Europe PMC, and PMC. Presence of a study is not endorsement. Records are refreshed from PubMed on a regular cadence; rows marked “Live search link” will resolve to a current PubMed search until a full citation has been ingested.
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· 2026 Open access
Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions.
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· 2026 Open access
Therapeutic peptides in gerontology: mechanisms and applications for healthy aging.
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· 2025
Effect of ACTH4-10Pro8-Gly9-Pro10 on anti-inflammatory cytokine (IL-4, IL-10, IL-13) expression in acute spinal cord injury models (male Sprague Dawley rats)
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· 2025 Open access
Semax, a Copper Chelator Peptide, Decreases the Cu(II)-Catalyzed ROS Production and Cytotoxicity of aβ by Metal Ion Stripping and Redox Silencing.
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· 2025 Open access
Genes That Associated with Action of ACTH-like Peptides with Neuroprotective Potential in Rat Brain Regions with Different Degrees of Ischemic Damage.
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· 2025
Semax peptide targets the μ opioid receptor gene Oprm1 to promote deubiquitination and functional recovery after spinal cord injury in female mice.
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· 2025
Modulation of neuropathological pathways by bioactive peptides and proteins/polypeptides: Targeting oxidative stress in neurodegenerative diseases.
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· 2025
The Effect of Peptide Semax, an ACTH(4-10) Analogue, on Intracellular Calcium Dynamics in Rat Brain Neurons.
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· 2025 Open access
The Potential of the Peptide Drug Semax and Its Derivative for Correcting Pathological Impairments in the Animal Model of Alzheimer's Disease.
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· 2024 Open access
Melanocortin Derivatives Induced Vascularization and Neuroglial Proliferation in the Rat Brain under Conditions of Cerebral Ischemia.
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· 2024
Changes of Transcriptomic Activity in Rat Brain Cells under the Influence of Synthetic Adrenocorticotropic Hormone-Like Peptides.
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· 2024
Antidepressant-like and antistress effects of the ACTH(4-10) synthetic analogs Semax and Melanotan II on male rats in a model of chronic unpredictable stress.
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· 2024 Open access
Short Peptides Protect Fibroblast-Derived Induced Neurons from Age-Related Changes.
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· 2024 Open access
ACTH-like Peptides Compensate Rat Brain Gene Expression Profile Disrupted by Ischemia a Day After Experimental Stroke.
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· 2023 Open access
Synthetic Adrenocorticotropic Peptides Modulate the Expression Pattern of Immune Genes in Rat Brain following the Early Post-Stroke Period.
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Clinical trials
1 record-
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Doses reported in studies
0 recordsNo study-protocol dose records have been curated for Semax yet. Absence of records is not evidence of safety — many peptides lack adequate human-trial data in the first place.
Records here are populated from public sources only (ClinicalTrials.gov protocol summaries and FDA-approved labels) and must cite a verifiable source URL. They are not added from forum posts, vendor pages, anecdotal write-ups, or social media.
These entries describe what was studied. They do not tell you what to take, how to reconstitute anything, how to fill a capsule, how often to administer, or where to obtain a compound. If you are considering use of Semax, those decisions belong with a licensed clinician working from the full label or trial record — not from this summary.
Why this page does not list a dose for self-use
The "Doses reported in studies" section above (when populated) describes what was administered in a cited study or label, under medical supervision, in a specific population. It is not a dosing guide for self-use. Separately, we do not publish anecdotal or community-reported dose ranges, administration methods, vial concentrations, or capsule masses for Semax. Anecdotal figures for unapproved compounds are not harm-reduction data: they lack denominators for adverse events, cannot account for individual physiology or compound purity, and normalise unsupervised use. See the safety policy for the full reasoning.
If this compound has an FDA-approved label
If a label exists, the regulator-reviewed dosing and administration information is there — read it in the context of a prescriber's evaluation.
Questions worth bringing to a clinician
- What is the evidence for this compound in someone with my history?
- What are the realistic, regulator-reviewed alternatives?
- What would you monitor, and what would make you stop?
If you have already taken a peptide and feel unwell: contact emergency services. In the United States, Poison Control is reachable 24/7 at 1-800-222-1222. Do not wait for a community thread.