taste in mouth after b12 injection Why Do I Have a Metallic My Getting the COVID-19 Vaccine? b12 injection side effects? :

Your Overall Health Underlying health conditions, such as gastrointestinal disorders (like Crohns disease, celiac disease, or atrophic gastritis) that impair nutrient absorption, or certain medications you may be taking, can influence how your body absorbs and utilizes B12

Like any shot, you may feel a slight pinch, but the discomfort is minimal

General guidance that many providers follow looks like this: There's no single schedule that fits everyone

Considering sublingual tablets or nasal spray for better absorption

People who take certain medications may also be at risk of vitamin B12 deficiency, including, but not limited to, estrogen, H2 receptor antagonists, PPIs (Proton Pump Inhibitors), Chloramphenicol, and Metformin