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Description History Selank is a synthetic heptapeptide analog of the endogenous immunomodulatory tetrapeptide tuftsin (Thr-Lys-Pro-Arg), bearing the amino acid sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro, in which the C-terminal Gly-Pro extension was structurally characterized as conferring enhanced resistance to enzymatic cleavage in biological research environments relative to the parent tuftsin sequence

For safe supplementation, check labels, combine diet with supplements when needed, and consult your healthcare provider if you have symptoms of deficiency or take medications affecting absorption

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Visible changes may be caused by diluent incompatibility, pH shift, ionic effects, concentration effects, or peptide-specific solubility behaviour