![]() ![]() Excess iron causes nausea and vomiting and may damage the liver and other organs.īe cautious about taking dietary supplements if you are pregnant or nursing. For example, too much vitamin A can cause headaches and liver damage, reduce bone strength, and cause birth defects. Taking more than you need costs more and might also raise your risk of side effects. As a result, you may get more of these ingredients than you think, and more might not be better. Manufacturers may add vitamins, minerals, and other supplement ingredients to foods you eat, especially breakfast cereals and beverages. Antioxidant supplements, such as vitamins C and E, might reduce the effectiveness of some types of cancer chemotherapy.John’s wort can speed the breakdown of many medicines and reduce their effectiveness (including some antidepressants, birth control pills, heart medications, anti-HIV medications, and transplant drugs). Vitamin K can reduce the ability of the blood thinner warfarin to prevent blood from clotting.Supplements can also interact with some medicines in ways that might cause problems. Some supplements can increase the risk of bleeding or, if taken before surgery, can change your response to anesthesia. You are most likely to have side effects from dietary supplements if you take them at high doses or instead of prescribed medicines, or if you take many different supplements. ![]() Always be alert to the possibility of a bad reaction, especially when taking a new product. ![]() Many supplements contain active ingredients that can have strong effects in the body. Food and Drug Administration (FDA) does not determine whether dietary supplements are effective before they are marketed. Many other supplements need more study to determine if they have value. A combination of vitamins C and E, zinc, copper, lutein, and zeaxanthin (known as AREDS) may slow down further vision loss in people with age-related macular degeneration (AMD).Omega-3 fatty acids from fish oils might help some people with heart disease.Folic acid decreases the risk of certain birth defects.Calcium and vitamin D help keep bones strong and reduce bone loss.Some dietary supplements can improve overall health and help manage some health conditions. To learn more about what makes a healthy diet, the Dietary Guidelines for Americans and MyPlate are good sources of information. However, supplements can’t take the place of the variety of foods that are important to a healthy diet. Some dietary supplements can help you get adequate amounts of essential nutrients if you don’t eat a nutritious variety of foods. The manufacturer suggests the serving size, but your healthcare provider might decide a different amount is more appropriate for you. Products sold as dietary supplements come with a Supplement Facts label that lists the active ingredients, the amount per serving ( dose), as well as other ingredients, such as fillers, binders, and flavorings. Popular supplements include vitamins D and B12 minerals like calcium and iron herbs such as echinacea and garlic and products like glucosamine, probiotics, and fish oils. Dietary supplements come in a variety of forms, including tablets, capsules, gummies, and powders, as well as drinks and energy bars. In addition to vitamins, dietary supplements can contain minerals, herbs or other botanicals, amino acids, enzymes, and many other ingredients. Many adults and children in the United States take one or more vitamins or other dietary supplements. Federal Government Information Sources on Dietary Supplements.Federal Regulation of Dietary Supplements. ![]()
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