Milligrams per kilogram

Milligrams per kilogram is a dosing unit that expresses the amount of a substance relative to the body weight of the person or animal receiving it.

Weight-based dosing is standard in pediatrics, veterinary medicine, and clinical research because body size strongly influences how a compound is distributed and eliminated. A dose stated this way is multiplied by the individual's weight in kilograms to arrive at a total milligram amount. Prescribing information for prescription cannabidiol and most published animal studies express doses in milligrams per kilogram, which is one reason those figures cannot be compared directly with the per-serving amounts on retail labels.

The unit appears in research summaries, prescription labeling, and veterinary literature. Converting a study dose to an individual requires an accurate weight, an understanding of the formulation studied, and clinical judgment, and it does not account for species differences, age, or organ function. For that reason a glossary can explain the unit but cannot supply a figure. Questions about weight-based amounts belong with a clinician or veterinarian.