symptoms worse after b12 injections If you have a low vitamin level, can go a long way toward improving your health and well-being. But if your B12 level is normal, don't fall for claims that Why do I feel worse
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Rarely, more serious allergic reactions can occur
It can be challenging for many people to absorb enough B12 through diet alone
If you follow a vegan diet, have gut issues, or take certain medications, talk to your doctor about checking your B12 levels
