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On the other hand, I also tell them that we have decades of experience using them, and that they appear to be largely safe and at least anecdotally effective in certain cases
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Consider intramuscular vitamin B 12 injections instead of oral replacement for suspected or confirmed vitamin B 12 deficiency caused by diet if: The person has another condition that may deteriorate rapidly and have a major effect on their quality of life (for example, a neurological or hematological condition such as ataxia or anemia)
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