Dietary supplements are products intended to supplement the diet and provide nutrients that may be missing or insufficient in a person's daily intake. They often come in various forms such as pills, powders, liquids, or bars, and contain vitamins, minerals, herbs, amino acids, enzymes, or other substances. The use of dietary supplements has become increasingly popular worldwide as people seek to improve their overall health and well-being, prevent deficiencies, or enhance athletic performance. Research in this area focuses on the effectiveness, safety, and potential health benefits of different types of dietary supplements, as well as their interactions with medications and potential risks associated with their use.