Supplement Combinations to Avoid for Optimal Health.

Certain supplements can interact with each other, leading to decreased effectiveness, increased risk of side effects, or potential harm to your health. Experts say people should use supplements with caution, especially since they are not regulated by the Food and Drug Administration (FDA) and most are not vigorously studied. If you take any supplements or plan to add some to your lifestyle, here are combinations you should look out for and avoid mixing, according to experts.