can you give vitamin b12 injection subcutaneously 1 ml B-12 Kit - SUBCUTANEOUS (Cyanocobalamin B12 Injection) - Sola Pharma Sandoz Vitamin B12 Injectable Solution
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Obeid R, Geisel J, Pietrzik K, Andres E Current nutrition reports 2025

A sore, swollen, or unusually pale tongue can also be a tell-tale sign

Starting low and adjusting based on results and tolerance is the recommended approach

dailymed.nlm.nih.gov
