Minoxidil is a medication used to treat hair loss or alopecia. It is a vasodilator that widens blood vessels, increasing the flow of blood to the scalp and hair follicles. There are several synonyms for minoxidil, including Rogaine, Loniten, and Mintop. Rogaine is a well-known brand name for minoxidil that is used topically to stimulate hair growth in both men and women. Loniten is another name for minoxidil that is used orally to treat high blood pressure. Mintop is a generic name for minoxidil that is available in various formulations, including topical solutions, foams, and sprays. These synonyms are often used interchangeably when referring to minoxidil and its various forms.