Out of date vials of B12 how stron Pernicious Anaemi Delighted I received my B12. I don't see a use by date on them or am I missing it? 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 Polymap Vitamin B Complex With Vitamin B12 Injection, 2 ml at 333 box in Nagpur AkfaLife B12 Vial 10 ml X 10 Oral Vial Akfa Life Vitamin B12 Vials Boost Energy & Neurological Health Pharmaroya Pharmaceutical Cosmetics Industry and Trade, OTC (Over the Counter), Food Supplements, Dermocosmetics, B12 Shots Tampa FL, Urgent Care South Tampa Immediate Care