Discover Our Diet Plans
6 Weeks Diet Plan
Our Six-Week Plan was developed for people who
want to lose weight on their own, using a clear framework.
Save £103 on our best selling 6 week diet plan.
The Most Flexible
Meal Replacement Plan
Our Partial Meal Replacement Plan is our most flexible option.
Save £86 on your first 2 weeks diet plan, with just £ 1.95 per meal
Supported by Science
Developed by scientists, widely researched and tested, OPTIFAST is a clinically proven, scientifically designed low calorie diet recommended for the dietary management of weight loss.