Medifast

Medifast is a clinically proven meal replacement and weight loss program founded in 1980 by a physician and designed to produce rapid, medically supervised weight loss through low-calorie, high-protein meal replacement products. The program uses a structured eating plan combining Medifast meal replacements (shakes, bars, soups, and snacks) with one self-prepared lean and green meal daily to achieve a calorie deficit that promotes rapid fat loss.

Medifast operates through two channels: Medifast Direct (purchasing meal replacement products online) and OPTAVIA (a coached program with personalized health coaching from certified OPTAVIA coaches). The OPTAVIA coaching model adds accountability and behavioral support that research suggests improves long-term weight management outcomes compared to uncoached meal replacement programs.

Medifast's cost runs $300–$400 per month for a full program—a meaningful investment. Comparing the all-in cost against meal costs saved during the program and the long-term health value provides context. Promotional codes through email subscriptions and periodic welcome offers of 10–20% off initial orders represent the most consistent savings opportunities on an otherwise tightly priced program.