Over-the-counter (OTC) medicines are sold directly to consumers without a prescription. There are approximately 800 OTC active ingredients available today that constitute more than 100,000 OTC products in the healthcare marketplace. Like prescription drugs, OTC medicines are regulated by the U.S. Food and Drug Administration (FDA). Available at more than 750,000 retail outlets including pharmacies, convenience and grocery stores, or mass merchandisers, OTC medicines are safe and effective when used as directed and the Drug Facts label instructs consumers on how to properly choose and use them. OTCs treat many common ailments including pain, fever, cough and cold, upset stomach, and allergies. OTC medicines should not be confused with dietary supplements (vitamins, minerals, herbals, and botanicals) which have different rules.