Medifast, Inc., through its subsidiaries, engages in the manufacture and sale of weight loss, weight management, and healthy living products in the United States and the Asia-Pacific. It offers bars, puffs, cereal, crunchers, drinks, hearty choices, oatmeal, pancakes, pudding, soft serve, shakes, smoothies, soft bakes, and soups under the OPTAVIA, OPTAVIA ACTIVE, and Optimal Health brand names. The company markets its products through point-of-sale transactions, as well as through ecommerce platform. Medifast, Inc. was founded in 1980 and is headquartered in Baltimore, Maryland.