When it comes to taking health supplements, it is essential to be aware of the potential side effects that may arise. Taking more than the recommended dosage can increase the risk of experiencing adverse reactions, and it is important to be aware of the risks associated with taking any type of supplement. It is also important to consult with your doctor before taking any dietary supplement or over-the-counter or prescription medication. The Food and Drug Administration (FDA) does not evaluate the effectiveness of dietary supplements before they are marketed.
However, a study published in The New England Journal of Medicine found that the adverse effects of supplements were responsible for an average of about 23,000 emergency department (ED) visits per year. In healthy people, vitamin D blood levels greater than 100 nanograms per milliliter can cause additional calcium absorption and lead to muscle pain, mood disorders, abdominal pain and kidney stones. If the dietary supplement contains certain new dietary ingredients, the manufacturer must submit data on the safety of that ingredient, but not on its effectiveness, for review by the FDA before the manufacturer markets a dietary supplement containing that ingredient. The FDA does not test the effectiveness of supplements (as it does with over-the-counter and prescription drugs) before they go to market.
Manufacturers may claim that a supplement promotes health or supports a part or function of the body (such as heart health or the immune system). It is important to take caution when taking any type of health supplement. Before taking any dietary supplement or over-the-counter or prescription medication, it's important to check with your health professional. In addition, tell your healthcare providers (including doctors, dentists, pharmacists, and dieticians) about any dietary supplements you are taking.
Taking more than you need costs more and may also increase the risk of side effects. And if you're managing an underlying health problem (especially if you're taking medications) or you're pregnant or breastfeeding, it is best to speak with your healthcare team before adding any new supplement to your regimen.