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Choosing Between Them The decision tree is straightforward: Anxiolytic research (anxiety models, stress reduction, GABAergic-related work) Selank Cognitive research (learning, memory, nootropic effects, neuroprotection) Semax Stress + cognition intersection potentially both, in parallel arms, studying different outcomes Immunopeptide-related research Selank (tuftsin lineage is more developed) Neither is universally "better" they're tools for different research questions

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I hope you will find this brief review of the peptide landscape helpful