can diabetics have b12 injections Does metformin interact with vitamin B12? assalamuwalaikum, Metformin can reduce absorption
assalamuwalaikum, Metformin can reduce absorption of Vitamin B12, and this is a well established long term adverse effect. Mechanism Metformin mainly interferes with: Calcium dependent absorption of the intrinsic factorB12 complex in the terminal ileum do you take vitamin B12 injection when you are on metformin. B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 Deficiency and Diabetes Klinio
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