Should I get B12 injection or use oral spray? : r B12_Deficiency Out of date vials of B12 how stron Pernicious Anaemi B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 Injection Manufacturer AdvaCare Pharma 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
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