Side Effects, Risks & Regulatory Notes Most people tolerate vitamin B12 injections well, but injection-site soreness, transient swelling, or redness can occur
Before using this product, discuss with your healthcare professional all OTC and prescription medicines you are currently taking
Hufeldt, M
Early Signs and Symptoms of Vitamin B12 Deficiency: Fatigue, weakness, and lack of energy: These symptoms may be brought on by inadequate vitamin B12, which lowers the synthesis of red blood cells
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In a study of 10 healthy male volunteers, omeprazole, in doses of 20 mg-40 mg per day, caused a significant decrease in the oral absorption of methylcobalamin, vitamin B12