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Headaches One of the most common symptoms of B12 deficiency is headaches
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Taking excess B12 can interfere with the effectiveness of certain other medicines, particularly diabetes medications Laser MD Medspa Not recommended for people with certain conditions like Leber's disease, cobalt allergies, or severe kidney problems
If you have a capable helper, then the upper buttocks or arm is a good choice and makes receiving the healthful benefits of B vitamins easier
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