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For most patients without severe malabsorption, sublingual B12 is a reasonable and convenient alternative to injections

J Clin Toxicol (2014) 4:1000181

Dihexa, with its combined N-hexanoic-Tyr-Ile-(6) aminohexanoic amide structure, exhibited a significantly extended half-life of 335.5 9.5 min, confirming that both N- and C-terminal modifications are effective strategies for improving metabolic stability [1]

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