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Research Guide Available , read the science, mechanism, and research data for this compound
While rare, taking too much vitamin A, D, or E can lead to potentially harmful side effects ( Alternatively, taking high doses of non-synthetic vitamin K seems to be relatively harmless, which is why an upper intake level (UL) has not been set for this nutrient ( Upper intake levels are set to indicate the maximum dose of a nutrient thats unlikely to cause harm for nearly all people in a general population ( SUMMARY Water-soluble vitamins are readily excreted from the body, while fat-soluble vitamins can be stored in tissues
A case-control study on adverse effects: H2 blocker or proton pump inhibitor use and risk of vitamin B12 deficiency in older adults
Best choice: your provider can recommend the right option based on your B12 level, the cause of your deficiency, and your symptoms
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