As an oral supplement, vitamin A mainly benefits people who have a poor or limited diet or who have a condition that increases the need for vitamin A, such as ...

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Vitamin E supplements appear to have no effect on whether people with mild cognitive impairment progress to Alzheimer's disease. Liver disease. Studies show ...

Vitamin D supplements are used to treat adults with severe vitamin D deficiency, resulting in loss of bone mineral content, bone pain, muscle weakness and soft ...

Feb 1, 2024 · For use as a dietary supplement: For oral dosage forms (capsules or chewable tablets):. Adults and teenagers: 6 to 15 milligrams (mg) of beta- ...

Vitamin C is an essential nutrient found in foods and available as an oral supplement. Learn about its potential benefits and the causes of vitamin C ...

Vitamin B-12 deficiency is associated with dementia and low cognitive function, but it's not clear whether vitamin B-12 supplements might help prevent or treat ...

Feb 1, 2024 · If you smoke or have a history of smoking or asbestos exposure, you should not take large amounts of beta-carotene supplements for long periods ...