Selank vs Semax: Head-to-Head Comparison
Selank and Semax are both Russian-developed regulatory peptides approved in Russia for clinical use. Selank is an anxiolytic based on tuftsin (an immune peptide), while Semax is a nootropic based on ACTH(4-10). Selank targets anxiety and stress; Semax targets cognition and neuroprotection.
Side-by-Side Comparison
| Dimension | Selank | Semax |
|---|---|---|
| Evidence Level | Approved in Russia; multiple Russian clinical studies | Approved in Russia; extensive Russian clinical and preclinical data |
| FDA Status | Not approved in US/EU | Not approved in US/EU |
| Mechanism | GABA modulation, serotonin metabolism, immune modulation (tuftsin analog) | BDNF upregulation, dopamine/serotonin modulation (ACTH fragment) |
| Primary Use | Anxiety, stress, immune support | Cognitive enhancement, stroke recovery, neuroprotection |
| Side Effects | Very well-tolerated; mild fatigue possible | Well-tolerated; mild irritation with nasal use |
| Route of Administration | Intranasal drops | Intranasal drops |
| Onset | Anxiolytic effects within minutes to hours | Cognitive effects noticeable within hours |
Peptide Overviews
Selank
BHuman StudiesSelank is a synthetic peptide developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. It is approved in Russia as an anxiolytic and nootropic medication.
Semax
BHuman StudiesSemax is a synthetic peptide derived from the ACTH(4-10) fragment, developed in Russia as a nootropic and neuroprotective agent. It is approved in Russia for stroke, cognitive disorders, and optic nerve disease.
Supplies for Both
Common research handling and preparation supplies for injectable peptide workflows.
Alcohol Prep Pads (200 ct)
Sterile 70% isopropyl pads for injection site preparation — essential for subcutaneous protocols.
1mL Insulin Syringes (28G)
Thin-gauge 28G syringes for subcutaneous peptide administration with minimal discomfort.
Sharps Disposal Container (1 Qt)
Biohazard-safe sharps container for responsible disposal of used syringes.
Digital Milligram Scale (0.001g)
High-precision scale for accurate measurement of peptide powder before reconstitution.
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Recommended Reading
Books covering peptide science, longevity research, and biohacking frameworks.
The Peptide Protocols
Comprehensive reference for peptide mechanisms, dosing research, and clinical applications.
Boundless by Ben Greenfield
Covers peptides, nootropics, hormones, and longevity strategies in an optimization framework.
Lifespan by David Sinclair
Evidence-based deep-dive into aging science, directly relevant to longevity peptide research.
The Longevity Paradox
Gut-centric aging research with diet and supplementation protocols for extending healthspan.
Amazon affiliate links; we may earn a small commission at no extra cost to you. See our disclosure.
Selank vs Semax: FAQ
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Medical Disclaimer
This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.
Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.
No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.