Vitamin B12 Injection at BiosenseClinic.com a Licensed Pharmacy Hi I bought the B12 injectable liquid but there's no use by date on it or how long you have to use it once it's opened. Anyone know the answer? TIA x CYANOCOBALAMIN INJECTION, USP 10,000mcg 10mL (1,000mcg mL) 10mL VIAL Are expired vitamin b12 syringes still effective? VITAMIN B12 INJECTION 1000 mcg mL
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