For those with Vitamin B12 deficiency, injections are an effective means of rapidly increasing blood oxygen levels, often in a noticeable boost in energy
Minor side effects can include: A bit of tenderness, puffiness, or pink discoloration right around the puncture A brief warm or flushed sensation Mild headache or nausea Reach out to a medical professional right away if you notice: Redness that keeps spreading, heat, or discharge near the site (possible infection) Hives, facial swelling, or difficulty breathing (possible allergic reaction) Persistent numbness or tingling that spreads beyond the site Fever or chills within 48 hours of injection Safe Needle Disposal and Storage A proper FDA-cleared sharps bin is ideal
Gallbladder disease, including gallstones (cholelithiasis) and gallbladder inflammation (cholecystitis), has been reported with GLP-1 receptor agonists as a class
That said, some people have trouble absorbing vitamin B12 from food and oral supplements and may need it in injectable form
