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vitamin b12 injection side effect What Is What's all the Buzz About B12 Shots? Vitamin B12 Injection Side Effects
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The menopause was my trigger for b1e vit d and ferritin plummeting I did get menopausal symptoms but knew more was going on

Any persons experiencing adverse vitamin B12 injection side effect reactions - most notably pain or any visible skin reaction at the injection spot - discontinue use and speak to your doctor

Now it is my rule never to do so before breakfast. The above quote from Winston Churchill is his typically witty style
Il n'existe pas d'hypervitaminose B 12
Its also associated with side effects