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Sublingual methylcobalamin (1000-2000 mcg) or monthly IM injections bypass reduced gastric acid and are more effective than oral cyanocobalamin for this population
(PubMed) Hudson S, Tabet N
A medication you take consistently every day beats a more potent one you forget or abandon, which means matching the format to your actual lifestyle (not your ideal one) matters as much as pharmacological differences
FDA used a semaglutide + vitamin B12 (cyanocobalamin) combination as an example of a compounded product (potentially the same APIs of two or more commercially marketed drugs) that it may consider essentially a copy, depending on route of administration and strength
Method: Delivered via Intravenous (IV) infusion
Some users skip the alcohol swab entirely, citing studies showing no increase in infection rates with clean dry skin technique
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