Milligram (mg) is a unit of mass commonly used in both scientific and pharmaceutical applications. It represents one-thousandth of a gram, which is equivalent to 0.001 grams. Mg is commonly used to measure the mass of small particles, such as medication doses, or the weight of unknown substances in chemistry experiments. Milligrams are also used to express the weight of nutritional supplements and vitamins. Mg is an important metric in healthcare, where precise dosages of medication can be critical to patient health outcomes. As such, the accurate measurement and use of milligrams is of utmost importance in these fields.