Vitamin B12 is not made by plants or animals, but by microbes that blanket the earth
The cyanocobalamin component of the injection may interact with certain medications that affect vitamin B12 absorption or metabolism
Wellness 20 July 2025 7 min read Needle Size for a B12 Injection: A Simple Guide By Alaiyka Parvez Owner, CoLaz Aesthetics Clinic The short version For an intramuscular B12 injection, the usual choice is a 22 to 25 gauge needle, 1 to 1.5 inches long, given at 90 degrees into the deltoid
Learn about the foods you should eat to make sure you get enough vitamin B12 in your diet
Surgery is not for everyone, and the decision belongs in a conversation with a primary care provider and a surgeon
In cases where a chronic condition is causing a deficiency, people may require B12 shots around every month