Unlike fad diets, the OPTIFAST program has been proven effective in more than 80 clinical studies and by more than 1 million people who have participated in the program since 1974. 

The OPTIFAST Program includes ongoing medical monitoring to assess your progress towards better health and that the doses of any medications you are taking and/or the calorie level of your diet are adjusted as you lose weight.

Medical monitoring includes:

  • A thorough preliminary medical examination and any necessary lab tests to determine your health status and rule out any risk factors. 
  • A personalized weight loss plan, based on your health status and weight loss goals. 
  • Continued guidance and medical monitoring of your progress, health, and well being throughout the course of treatment. 
  • Communication with your primary care physician, as necessary.

Technologies for Optifast

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What to Expect for Optifast

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Side Effects and Risk Factors for Optifast

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Education and Resources for Optifast

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Learn more about Optifast

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