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The benzyl alcohol helps maintain the solution's sterility, preventing contamination each time the rubber stopper is punctured

B12 is water-soluble, so your body uses what it needs, stores a small amount in the liver, and passes most of the excess in urine

Extreme acid or alkaline conditions massively accelerate hydrolysis and should never be used for storage

(Note: All Herbilabs products are sold strictly for Research Use Only (RUO) not for human or veterinary use.) Shelf Life When Unopened Unopened bacteriostatic water remains stable until the printed expiry date on the vial