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Metformin is well-established as reducing B12 absorption , primarily through interference with calcium-dependent B12-intrinsic factor uptake in the terminal ileum
Patients frequently express frustration on forums like GLP-1 non-responder Reddit when faced with months of minimal results despite adherence to treatment protocols
If you are still weighing benefits and outcomes, learn more in our article Does IV Vitamin Therapy Really Work? where we discuss the research-based efficacy and results of IV vitamin therapy
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