b12 pill vs injection The Advantages of Injections Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine Ask the doctor: B12 shots

Promote Nervous System and Red Blood Cell Health B12 is essential for red blood cell formation and proper nerve function

Taking birth control, antacids, or chronic medications that interfere with absorption

Safety of Long-Term Weekly Use Is it safe to get a shot every week for months

Vitamin B12 injections are most clinically appropriate in cases of confirmed vitamin B12 deficiency, malabsorption syndromes including pernicious anaemia or post-gastric surgery, significant symptoms where rapid restoration of vitamin B12 levels is required, or failure of oral supplementation due to poor absorption

Once the sharps bin is full, research your local rules on how to dispose

Feel tired, weak, or forgetful regularly