What is a Low Calorie Diet?

What is a Low Calorie Diet?

A low calorie diet is a clinically proven diet plan that involves eating about 800 calories a day. They are considered for overweight and obese people who are managing diabetes.

Our Featured Diet Plans

OPTIFAST offers several plans for you to choose from, depending on your weight loss goals and your personal lifestyle.

6 weeks plan


Best-Selling
Full 6 Week Diet Plan

Our Six-Week Plan combines nutritional knowledge and exercise tips with behavioural strategies that can fit easily into your lifestyle.

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lose large amount of weight


The Popular
Intermittent Fasting Plan

It offers the flexibility to switch between periods of fasting and eating, without restricting your caloric intake for days in a row.

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Maintain my current weight


Most Flexible
Meal Replacement Plan

You can create your own weight loss plan by deciding how many meals a day you’d like to replace with our OPTIFAST meal replacement products.

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Maintain Your Desired Weight For Good

Our Maintenance Plan is designed to help you to maintain your desired body weight, particularly after weight loss. Enjoy 28% off on 8 weeks maintenance diet plan, for just £1.84 per meal.

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3 Days Trial Pack

This plan is specially designed to help people in their weight loss journey in a structured and efficient way. Enjoy 4 OPTIFAST meals a day as your sole food consumption with total calories intake per day: average 800 kcal.

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Want To Find Your Perfect Diet Plan?

To help you decide which diet plan is perfect for you,
Click below to calculate your BMI and discover our recommended plan for you.

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