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Key Research Facts: Semax vs Selank at a Glance Both peptides are 7 amino acids (heptapeptides) in length Semax increases BDNF by up to 80% in some animal models (per Russian research) Selank mimics the bodys natural tuftsin peptide, supporting immune and neural regulation Both are approved medications in Russia and Ukraine for clinical use Neither is currently FDA-approved

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A B12 injection allows for a rapid increase in levels directly in your bloodstream and therefore a more efficient way to restore levels and improve symptoms

This uncertainty is one of the challenges with using compounds that lack regulatory approval