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On a standard insulin syringe, this is approximately 0.007-0.012mL (roughly 1 unit)
Regulatory authorities do not approve it for human or veterinary use
doi:10.1055/a-0856-1044 Note: Originally published in April 2017, this article has been revised and updated for accuracy and thoroughness.
Those who dont regularly consume animal products rich in vitamin B12 may want to consider adding fortified foods to their diet or taking a supplement to ensure that their nutritional needs are met
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