Find answers to common questions about the OPTIFAST® program

What is OPTIFAST®?

OPTIFAST® is a comprehensive weight management program that combines lifestyle education and medical monitoring with a meal replacement diet. To get detailed information on the OPTIFAST® program, patients attend a consultation that takes about one hour. Find a clinic near you to learn more.

Is medically monitored weight loss safe?

Clinical studies suggest medically monitored weight management programs are safe, effective, and help individuals to address and modify behaviors to encourage long-term weight management.1

How much weight will I lose?

Although individual results vary, the typical OPTIFAST® patient loses an average of 50 pounds in 26 weeks.

How much does OPTIFAST® cost?

The cost of the OPTIFAST® program varies by city and by clinic and on the specific program that is right for your weight loss goals and individual medical situation. To get detailed information on the OPTIFAST® program, patients attend a free, no-obligation consultation that takes about one hour. Find a clinic near you.

Will I keep my weight off?

Patients who continue to use weight maintenance programs have a greater chance of keeping weight off than those patients who do not continue using weight maintenance programs2

Can I eat food while on the OPTIFAST® program?

The OPTIFAST® program consists of three phases — an Active Weight Loss Phase, a Transition Phase, and a Long-Term Weight Management Phase. During the 12-week Active Weight Loss Phase, you will consume a full meal replacement diet of OPTIFAST® products. During the Transition Program, you will transition to eating self-prepared regular food. OPTIFAST® programs vary slightly. Please consult with your OPTIFAST® healthcare professional on what is appropriate for you.

Who is OPTIFAST® designed for?

OPTIFAST® is designed for patients with a body mass index greater than 30, and is only recommended as part of a comprehensive treatment program.

How long does the OPTIFAST® program usually last?

The OPTIFAST® program usually lasts from 18-26 weeks, utilizing a full meal replacement plan that transitions to self-prepared “everyday” meals in conjunction with comprehensive patient education and support.

What kind of healthcare professionals are part of the program?

While each clinic is a little different, typically a weight management team will include a physician who provides regular monitoring of health status, a dietitian who provides nutritional support, and a behaviorist who leads weekly sessions on various lifestyle topics.

Is OPTIFAST® covered by insurance?

Insurance carriers are inconsistent in what they cover when it comes to weight loss and vary greatly by state. It’s important to contact insurance providers, prior to starting the program, to see if they cover a portion of it. Employee benefits and healthcare spending accounts are also options for reimbursement with some employers.


  • Jensen MD, Ryan DH, Apovian CM, Ard JD, Comuzzie AG, Donato KA, Hu FB, Hubbard VS, Jakicic JM, Kushner RF, Loria CM, Millen BE, Nonas CA, Pi-Sunyer FX, Stevens J, Ste
  • Diabetes Metab Syndr Obes. 2016; 9: 37–46. Published online 2016 Feb 26. doi:10.2147/DMSO.S89836 PMCID: PMC4777230 Long-term weight loss maintenance for obesity: a multidisciplinary approach Luca Montesi,1 Marwan El Ghoch,2 Lucia Brodosi,1 Simona Calugi,2 Giulio Marchesini,1 and Riccardo Dalle Grave2