Patient Variation in Pernicious Anaemia, as Shown in a Clinical Trial of Cyanocobalamin, Hydroxocobalamin and CyanocobalaminZinc Tannate Variation between patients makes it impossible to anticipate the duration of effect of a single injection of one of these drugs in any patient
Other parts might have virtually no preservative at all, rendering them no better than sterile water and susceptible to bacterial growth
Nitrous oxide misuse can cause vitamin B12 deficiency and absorption issues, which can lead to nerve damage, paralysis, chronic numbness, and loss of coordination
PubMed Central, Wang, Honglei, et al
"In addition, your response is inadequate because you did not provide sufficient details about proposed changes to policies and procedures being implemented at your site to prevent similar violations in the future