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Your body needs steady levels of this nutrient to make enough red blood cells and keep your nervous system working

Vitamin B12 is water-soluble, so any excess is naturally excreted by the body, reducing the risk of toxicity

Certain supplements may also have potential drug interactions

Beginners often choose a slightly larger volume because it helps with easy measurement

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Then, we'll review your medical history, looking at things like your diet (especially if you're vegan or vegetarian), your age, any stomach or gut conditions, past surgeries, and even the medicines you take, like metformin or proton pump inhibitors, which can sometimes affect B12 levels