Semax, a Unique Russian Peptide with Remarkable Nootropic Properties



Semax is a drug developed in Russia and promoted for its nootropic properties11;2-B. Semax has profound effects on learning and has notable neuroprotective activity1 It’s been shown to significantly improve memory and attention in healthy people under extreme conditions, and improve brain circulation and resistance to oxygen deficiency (hypoxia)8

A notable quality of Semax is its ability to increase BDNF levels and the corresponding signaling receptor (trkB) in the hippocampus1 BDNF is brain-derived neurotrophic factor, a molecule produced in the brain that promotes the proliferation and survival of new neurons. Semax also significantly increases levels of the serotonin and can modulate the release of striatal dopamine2

Semax has demonstrated reliable antidepressant and anxiolytic effects4, and can reduce the neurological effects of chronic stress. These mood brightening properties are due to its strong affinity for the serotoninergic system and increased BDNF expression in the hippocampus.

Due to these properties, Semax is remarkably similar to Tianeptine, though it’s pharmacology is quite different. Like Tianeptine, it shares the characteristics of increasing BDNF,  reversing neurological damage from stress, and having antidepressant and anxiolytic activity. Similarly, Semax also shows a lot of promise for effectively treating various mental health conditions, most notably depression6, and ADHD7

Semax is a synthetic analogue of ACTH 4-10: an endogenous hormone produced from in the pituitary gland. ACTH 4-10 acts as potent melanocortin receptor agonist, which improves memory and attention and provides neuroprotection (including ischemia-induced cardiac-injury)9 As an analogue of ACTH 4-10, Semax shares many of these properties: Semax’s primarily mechanism of action appears to come from modulation of melanocortin receptors.

Interestingly, like its cousin Selank, Semax has also been shown inhibit enzymes responsible for the breakdown of enkephalin10 – a naturally-occuring opioid peptide in the body that can brighten mood and reduce stress.

Semax has not demonstrated any serious negative side-effects or complications and is non-addictive8 However, from various user reports there does appear to be some risk of acute hair loss due to the heightened BDNF levels. However, this effect is not permanent and users have reported their hairline returned to normal after cessation. For those if you who wish to try Semax but are wary of this potential side-effect, it would appear that supplementation of panax ginseng has actually been shown to prevent hair-loss induced from the heightened BDNF levels.12

Overall, Semax is a very unique drug and is among the most promising solutions for treating depression effectively.


Where to Purchase Semax


Buy Semax Nasal Drops at Cosmic Nootropic [Vendor Info]


Semax Dosage Information

Semax comes in nasal drops due to poor oral bioavailability. A standard dose is 100-150 mcg, taken up to 3x daily.






FDA Compliance

The information on this website has not been evaluated by the Food & Drug Administration or any other medical body. We do not aim to diagnose, treat, cure or prevent any illness or disease. Information is shared for educational purposes only. You must consult your doctor before acting on any content on this website, especially if you are pregnant, nursing, taking medication, or have a medical condition.

Medical Disclaimer


Affiliate Disclosure





Leave a Reply

Your email address will not be published. Required fields are marked *