b12 injection cause headache After Shot: Why It Happens & What to Do Why Do I Feel Worse
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Talk to your doctor about what your specific results mean

The symptoms of B12 deficiency The symptoms of B12 deficiency follow from the metabolic functions of vitamin B12

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over the years we've come to understand what works - and doesn't work - for the human body

A good starting dose would be 500mcg (0.5mg) per day, but you can give up to twice as much
