Vitamins and supplements like melatonin and fish oil offer health benefits but can cause side effects if misused. Learn about the impact of saw palmetto on blood pressure and find the best multivitamins for young women and adults over 50.
Magnesium is a mineral naturally present in foods, but magnesium compounds -- such as magnesium citrate -- may be recommended as a laxative or to counter a deficiency. Since excess supplemental magnesium can lead to toxicity, it's important to follow recommendations for safe and effective dosing.
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About one-half of U.S. adults take dietary supplements, with multivitamin-mineral products, calcium supplements and omega-3 or fish oil being the most common choices, reports a March 2013 article in "JAMA Internal Medicine."
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