It is especially useful in conditions where oral supplementation is not suitable or effective, such as in critically ill patients, ICU cases, severe vomiting, or in patients with poor compliance to oral therapy
Taking B vitamins can also help prevent deficiencies caused by your diet or even certain health conditions
What does an injection do that an oral supplement doesnt
(PubMed) Smith AD, Refsum H, Bottiglieri T, et al
Revised Date: January 18, 2023 Recommendations and Topics Scope Key Recommendations Background Epidemiology Patient Risk Factors Associated with B 12 Deficiency Patient Risk Factors Associated with Folate Deficiency Prevention Diagnosis Management Ongoing Care References Resources Appendix A: Dietary sources of cobalamin Scope This guideline covers the primary care investigation and management of cobalamin (vitamin B 12 or simply B 12 ) and folate deficiency in adults
Because fast-acting B12 injections bypass the stomach, they are the most effective way to treat this condition