gastric bypass b12 injections and Many teens have low iron, B12 levels years after bariatric surgery Why Vitamin B12 supplements are
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2022 Aug;24(8):1423-1428

Even more interesting, this happened without any changes to their diet

You do not need stomach acid to absorb B12 from an injection

This content is not a substitute for professional medical advice, diagnosis, or treatment

Read that list as a set of research directions, not promises

Before starting the weight loss medication, it is important to understand that compounded tirzepatide with vitamin B12 is not FDA-approved for its safety, quality, and efficacy, and should only be purchased from a licensed compounding pharmacy with a valid prescription from a healthcare provider.
