intramuscular needle size for b12 injection Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r/B12_Deficiency what gauge needle to use

According to the Mayo Clinic, parenteral vitamin B12 therapy is clinically indicated for treating deficiency caused by pernicious anemia, gastrointestinal disorders such as tropical sprue, and conditions resulting in malabsorption like pancreatic insufficiency

Vitamin Injections Vitamin injections enable direct delivery of key nutritional supplements including vitamins or antioxidants directly into the body through the veins, where they can be rapidly absorbed and delivered through the venous system

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Are you having trouble getting enough vitamin B12 in your diet

Participants receiving the highest dose (1.0 mg) achieved a mean weight loss of 10.6%, while those in the placebo group experienced a mean weight loss of only 2%