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B12 Injection Dosage and Frequency: 7 Guidelines for Adults Vitamin B12 for Injection Cyanocobalamin 1,000 mcg, 25 Box (Rx) Mountainside Medical Prolaject B12 2000 Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff
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