What is a VLCD?

What is a VLCD?

A VLCD (very low calorie diet) is a formulated, nutritionally complete, liquid or solid meal containing 3350kJ (800 calories) or less per day. VLCD formulas need to contain appropriate levels of vitamins and micronutrients to ensure that all daily nutritional requirements are met.

How does it work?

VLCD’s provide an amount of energy which is significantly less than the amount the body requires each day. This forces the body to start using its own fat stores as the main source of energy resulting in weight loss.

Optislim VLCD Program

There are three phases of the Optislim program, you should check with your Healthcare Professional to determine which phase is most suited to your individual weight loss needs


*Your calorie allowance will depend on your start weight & gender, please use the reference below to determine your calorie allowance.
Female: <100kgs=1000, 100-150kgs=1200, >150kgs=1500;
Male: <100kgs=1200, 100-150kgs=1500, >150kgs=1800

^Based on the daily energy intake for the average adult diet of 8700kJ, your energy intake may be higher or lower depending on your age, gender, weight and lifestyle.