Pharmacokinetics of Melatonin Administered in Oral, Lotion, and Bubble Bath Formulations

Melatonin is a hormone that promotes sleep that is available without a prescription in the United States. In addition to oral supplements, melatonin can be purchased in the form of lotions and bubble baths with unknown dosage and no frequency or age recommendations. In this study, researchers will examine how quickly melatonin in lotion and bubble bath is absorbed compared to oral tablets, as well as how long the melatonin lasts in the body.