Medifast is the leader in innovative, great tasting, soy-based medical meal replacement products. MacDonald has successfully repositioned the Company to focus on the growing problem of obesity and the development, manufacturing and distribution of consumable health, disease management and diet product lines under the Medifast brand. The Medifast brand has been recommended by over 15,000 physicians nationwide and used by more than 1,000,000 customers. Browse the Medifast deals listed bellow and take advantage of the Medifast coupons, specials or sales.