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They are not intended for diagnostic or therapeutic applications, and they should be handled only by qualified personnel in appropriately equipped laboratory environments using established institutional procedures for chemicals and laboratory reagents

Here are some important aspects of vitamin B12: 1

Patients with Multiple Endocrine Neoplasia syndrome type 2, a genetic condition associated with increased risk of medullary thyroid carcinoma, should also avoid treatment with this medication

Factors such as initial B12 levels, underlying medical conditions, certain medications, advanced age, and injection frequency can affect the absorption and utilization of B12, possibly shortening the duration of action

Regular injections ensure that levels remain stable, whereas infrequent injections may result in declining B12 levels over time