is sublingual b12 as good as injections The Advantages of Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine Benefits of B12 Injections for

Why B12 Matters: Vitamin B12 is essential for: Red blood cell production DNA synthesis Nerve function Mental clarity Energy metabolism Its especially critical for vegetarians, vegans, older adults, or those with conditions like pernicious anemia or digestive malabsorption issues (e.g., celiac, Crohns, or low stomach acid)

NHS approach to B12 deficiency: NICE Clinical Knowledge Summaries recommend investigating B12 deficiency in patients presenting with macrocytic anaemia, unexplained neurological symptoms, or risk factors including pernicious anaemia, gastrectomy, malabsorption disorders, metformin use, proton pump inhibitors, or nitrous oxide exposure

PMC 11448733

Storage and Shelf Life Unreconstituted (lyophilized) peptides are stable at room temperature for shipping but should be refrigerated (2-8 C / 36-46 F) upon arrival