These can dissolve in water and don’t usually accumulate in the body nor cause severe side effects if you take them in excess (e.g., B vitamins, vitamin C). Multivitamins generally contain three categories of nutrients: Megadoses of some nutrients may not be particularly harmful, but extremely high doses of certain nutrients can seriously harm your health ( 4). Others offer megadoses of certain nutrients that purposefully exceed the UL recommendations, capitalizing on some people’s belief that the more nutrients you ingest, the better the health effects. Nutrient levels in some multivitamins may sometimes even reach or exceed the daily UL. This means there’s a risk that a multivitamin could contain higher levels of nutrients than its label states. However, it’s important to note that the government doesn’t regulate multivitamins in the same way as it does medications ( 4). The National Institutes of Health asserts that multivitamins providing nutrient levels that fall close to their DRI shouldn’t cause serious side effects. Some people experience gut-related side effects when they first start taking a multivitamin, but these usually resolve quickly. Multivitamins are generally safe as long as they provide nutrient levels that fall within the DRI guidelines. To reduce the risk of side effects or toxic overdoses, make sure to consult your healthcare provider before giving your child a multivitamin. Scientists consider this to be a lead cause of poisoning in children 6 years old and under ( 4). Giving your child an iron-containing multivitamin when they don’t need it may also cause them to overdose on iron. This may explain why experts report that children who consume multivitamins have a high risk of exceeding the UL, particularly for vitamin A, folic acid, and zinc ( 4). However, a recent study suggests that up to 65% of them contain nutrient levels above the safe upper limits (UL) for children ( 5). In other words, children who take multivitamins may have a higher risk of consuming extremely high levels of nutrients, which can lead to nutrient overdoses and even death in severe cases.Ĭompanies market many multivitamins specifically for infants and children. However, children are likely to experience them at much lower doses than adults. Side effects in children are similar to those that adults may experience. If you notice hives, difficulty breathing, or swelling of the face, tongue, lips, or throat after taking a multivitamin, seek emergency medical help immediately. Some people may also experience severe allergic reactions to certain multivitamins, although this is very rare. This may increase their risk of side effects ( 4).įood companies sometimes add nutrients to foods during the manufacturing process. However, people who combine multivitamins with other supplements or eat significant amounts of fortified foods may exceed the UL for certain nutrients. These typically occur very infrequently, especially if the dosage of nutrients in your multivitamin does not exceed the daily safe upper limit (UL). Rarer side effects of multivitamins include ( 2, 3): Nevertheless, contact your healthcare provider for further assistance if your symptoms persist. They tend to disappear as your body gets used to taking the multivitamin. These gut-related side effects are generally minor and often temporary. Common side effectsĬertain side effects are more likely to occur than others when you’re taking multivitamins. Some side effects are more common than others ( 2, 3). Nonetheless, some people may still experience a few side effects when taking multivitamins. Olly vitamins side effects free#Multivitamins that provide up to 100% of the daily Dietary Reference Intakes (DRIs) are generally considered safe and often free of side effects, as long as you take them as directed. That said, multivitamins provide a good alternative source for those who are unable to meet their nutrient requirements through diet alone. Your body needs to consume at least 13 vitamins and 16 minerals regularly to function properly.Ī well-balanced diet is the best way to obtain these nutrients.
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