What is a Low Calorie Diet?

Partial Meal Replacement

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. The more meals you replace, the more weight you can lose

OPTIFAST chocolate flavoured shake in glass with paper straw

How does it work?

Intense Level - 3 Week Plan

We encourage people to start with this Level as this is where the greatest weight loss occurs.

  • 3 Optifast meal replacements + one self-prepared low-calorie meal per day
  • Recommended total calorie intake of up to 1200Kcal/day


Active Level - 5 Week Plan

For a more gradual weight loss journey.

  • 2 Optifast meal replacements + 2 conventional low-calorie meals per day;
  • Recommended total calorie intake of up to 1500Kcal/day


Once weight loss goal is achieved, move into Maintenance plan.

A program of regular light exercise enhances wellbeing and therefore the likelihood of success.

All you need to know in 60 seconds

OPTIFAST Support Hub

Check out our blog for more recipes, workouts and tips.