USP guidance describes a 28-day beyond-use date for multi-dose vials after first puncture, assuming aseptic technique on every draw
If you still dont have an improvement in your symptoms on sublingual B12 then consider using methylcobalamin injections
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Strinic D, Belosic Halle Z, Luetic K, Nedic A, Petrovic I, Sucic M, Zivanovic Posilovic G, Balenovic D, Strbe S, Udovicic M, Drmic D, Stupnisek M, Lovric Bencic M, Seiwerth S, Sikiric P
See our full UK buyer's guide for 5-Amino-1MQ