Condition Guide
Peptides for Cognitive Decline
Semax, Selank, and related Russian-developed nootropic peptides have been investigated for decades in cognitive decline, stroke recovery, and attention disorders.
Educational content only. This page is compiled from published research for reference and is not medical advice, diagnosis, or treatment. Readers should verify claims against primary sources and consult a qualified healthcare provider before making any health decisions. Full disclaimer.
How peptides help
Semax (ACTH 4-10 analog) and Selank (tuftsin analog) upregulate BDNF and NGF, modulate monoamine metabolism, and support synaptic plasticity. Both are approved in Russia for cognitive and anxiety indications.
Peptides researched for cognitive decline
Semax
Moderate EvidenceL3Approved in Russia for stroke recovery and cognitive decline.
84 studies · Melanocortin & BDNF Signaling
Selank
Moderate EvidenceL3Approved in Russia for anxiety with cognitive benefits.
54 studies · Tuftsin Analog / Immune-Neuro Modulation
NAD+
PreliminaryL3May support mitochondrial function in neurons.
260 studies · Sirtuin & PARP Cofactor
State of the evidence
Russian clinical data exists for both Semax and Selank. Western controlled trials are sparse. Safety data is favorable; efficacy outside Russian literature is not well characterized.
Frequently asked
Are Semax and Selank available in the US?
They are not FDA approved and are classified as research chemicals in the U.S. Availability from reputable sources is limited.
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