Many mild side effects are local and brief, but repeated injections over years are poorly characterized in the literature
optional extension to 16 weeks
Sources Vitamin B12 - Consumer | National Institutes of Health VITAMIN B12: Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews | WebMD Article Vitamin B12 Deficiency: Causes, Symptoms, and Treatment | WebMD Living longer isnt enough if you dont feel your best
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It is safer to be evaluated and discharged than to wait on a potentially time-critical condition
Not surprisingly, the most common question we get from both groups is, just how quickly do B12 shots work