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Any excess gets excreted in the urine
Using vials that have been reconstituted for months likely means injecting degraded, ineffective product
Leciejewska N, Koodziejski PA, Sassek M, Nogowski L, Maek E, Pruszyska-Oszmaek E
Vitamin B12 is water-soluble and has a low potential for harm, but more injections is not automatically better
Common Reconstitution Mistakes to Avoid Even experienced laboratories occasionally encounter preventable handling errors
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