Pain and Irritation at Injection Site The most common reaction to B12 injections is pain, redness, swelling, or irritation, where the needle goes into your skin or muscle
The classic symptoms of B12 deficiency are persistent fatigue, tingling or numbness in the hands and feet, problems with memory and concentration, mouth ulcers, a sore red tongue, and pale or yellow-tinged skin
Body composition changes are not yet visible
Many patients achieve significant and lasting weight loss when these medications are combined with lifestyle changes
A 55-year-old woman suffered an allergic reaction after her second dose of an intramuscular cyanocobalamin B12 shot
So, those who want to achieve greater weight loss results, in a short period of time, will opt for this form of the supplementation when beginning a dosage cycle