For short-term use (ranging from a few days to several weeks), refrigeration below 4C (39F) is suitable
The calculator above reports this as "doses per vial" the moment you enter a dose
If the pharmacy cannot provide appropriate documentation or verification of quality standards, consider this a significant safety concern warranting discussion with your healthcare provider about alternative sources

Cyanocobalamin Injection, Solution NDC Package 69680-121-05 Package Information Cyanocobalamin injection is cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption which may be associated with the following conditions:Addisonian (pernicious) anemiaGastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomyFish tapeworm infestationMalignancy of pancreas or bowelFolic acid deficiencyIt may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue
doi: 10.1016/S0893-133X(98)00067-0
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