American Regent is conducting a nationwide voluntary recall to the Retail/Hospital level of the following product: Cyanocobalamin Injection, USP, 100 mcg/mL, 1 mL Vial NDC # 0517-0031-25 Lot # 1662, Exp Date: November, 2013, Lot # 1679, Exp Date: November, 2013, Lot # 1683, Exp Date: November, 2013.