Jason Pharmaceuticals

Jason Pharmaceuticals is a wholly-owned subsidiary of Medifast, Inc., specializing in the development and manufacture of clinically proven weight management and health-related products. Founded by a physician in 1980, the company produces a wide range of meal replacement shakes, bars, and snacks designed for medical weight loss programs. Its products are primarily distributed through the OPTAVIA brand and are used in programs recommended by thousands of healthcare professionals. The company maintains a focus on portion-controlled, nutritionally balanced formulations to support metabolic health and long-term weight maintenance. Jason Pharmaceuticals operates as the primary manufacturing and research arm for its parent company's clinical nutrition portfolio.