vitamin b12 injections still tired Do Help With Fatigue? Vitamin B12 Injection | Causes

That sensation usually indicates needle contact with a nerve

Blunted or impeded therapeutic response to vitamin B 12 may be due to such conditions as infection, uremia, drugs having bone marrow suppressant properties such as chloramphenicol, and concurrent iron or folic acid deficiency

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Vitruvias Cyanocobalamin for Injection 1 mL Vial is a prescription medication that contains the active ingredient cyanocobalamin

And there are hundreds of different drugs that can cause dry mouth, resulting in too little saliva production

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