severe pain after b12 injection Common & Rare Side Effects of Vitamin Injections Why do I feel worse

[1] [12] For most people, doses up to 2 mg (2000 micrograms) daily are unlikely to cause harm according to NHS guidance, as B12 is water-soluble and excess is typically excreted in urine

You may be vitamin B deficient if you experience some or all of the following unexplained symptoms: Skin cracks around the mouth Scaly lip skin Skin rashes Fatigue Anemia Depression or irritability Confusion Diarrhea or constipation Abdominal cramps Tingling or numbness in your feet and hands Vitamin B12 deficiency is particularly serious, as it increases your risk for neuropsychiatric disorders

Your personal health, your goals, and how your body responds all play a big part

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