It is not a toxicity concern but an efficacy consideration
A comprehensive review of B12 biochemistry, nutrition and metabolism
ADVERSE REACTIONS: Occasional deaths have occurred in piglets following the administration of parenteral iron dextran preparations
Your ultimate goal, regardless of whether youre going with IM or SubQ, is to avoid any arteries or veins with the needle
These range from FDA-approved medications, such as GLP-1 receptor agonists (Wegovy, Zepbound) for weight loss, to unregulated compounds with minimal or no human safety data
It is not authorized for diagnosing, treating, curing, or preventing any disease in humans