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  • Why OPTIFAST®
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    Why OPTIFAST®?

    The science-based program that delivers weight loss for health gains

    Why OPTIFAST®?

    The Evidence of OPTIFAST®

    OPTIWIN is a study designed to evaluate the effectiveness of the OPTIFAST® program

    The Evidence of OPTIFAST®

    The OPTIFAST® Journey

    The OPTIFAST® Program includes 3 key phases, all tailored to individual patients' needs

    The OPTIFAST® Journey

    OPTIFAST® Products

    OPTIFAST® products are ready to eat or just require mixing with water, so they’re fast and easy to enjoy even on the go.

    View all products
  • How OPTIFAST® Works
  • Success Stories
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    Ellen* - Plymouth, MI

    Weight Loss: 45 lbs*

    Ellen*

    Kevin* - Fresno, CA

    Weight Loss: 147 lbs*

    Kevin*

    Audrey* - Blacklick, OH

    Weight Loss: 70 lbs*

    Audrey*

    Craig* - Grass Valley, CA

    Weight Loss: 185 lbs*

    Craig*
    VIEW ALL SUCCESS STORIES
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    OPTIFAST® Products

    OPTIFAST products are ready to eat or just require mixing with water, so they’re fast and easy to enjoy even on the go.

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  • Why OPTIFAST®
    All Products

    Why OPTIFAST®?

    The science-based program that delivers weight loss for health gains

    Why OPTIFAST®?

    The Evidence of OPTIFAST®

    OPTIWIN is a study designed to evaluate the effectiveness of the OPTIFAST® program

    The Evidence of OPTIFAST®

    The OPTIFAST® Journey

    The OPTIFAST® Program includes 3 key phases, all tailored to individual patients' needs

    The OPTIFAST® Journey

    OPTIFAST® Products

    OPTIFAST® products are ready to eat or just require mixing with water, so they’re fast and easy to enjoy even on the go.

    View all products
  • Success Stories
    All Products

    Ellen* - Plymouth, MI

    Weight Loss: 45 lbs*

    Ellen*

    Kevin* - Fresno, CA

    Weight Loss: 147 lbs*

    Kevin*

    Audrey* - Blacklick, OH

    Weight Loss: 70 lbs*

    Audrey*

    Craig* - Grass Valley, CA

    Weight Loss: 185 lbs*

    Craig*
    VIEW ALL SUCCESS STORIES
  • Our Products
    All Products
    OPTIFAST® Shake Mix
    OPTIFAST® Shake Mix
    OPTIFAST® Bar
    OPTIFAST® Bar
    OPTIFAST® Ready to Drink Shakes
    OPTIFAST® Ready to Drink Shakes
    OPTIFAST® Soup Mix
    OPTIFAST® Soup Mix

    OPTIFAST® Products

    OPTIFAST products are ready to eat or just require mixing with water, so they’re fast and easy to enjoy even on the go.

    View all products
  • How OPTIFAST® Works
  • OPTIFAST in Canada
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Lose Weight, Gain Health

The OPTIFAST® Program is a medically-supervised weight loss program that closely monitors and assesses progress towards better health and emotional well-being.

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A Multi-Disciplinary Program To Achieve A Healthier You

Our comprehensive weight loss program contains multiple components, including medical, nutritional, and behavioral support, to help you lose weight and improve your health. Click each subject to learn more.

Medical Monitoring

Evaluation and support of patients health and well-being throughout the program.

Nutrition Education

Strategies for successful long-term lifestyle change.

Exercise Guidance

Integrating activity into a weight loss program leads to greater success.

Patient Support

OPTIFAST® clinics provide personal weight loss counseling and support, as well as lifestyle education, throughout the program.

Full Meal Replacement

Nutritionally complete (in 5 servings) with at least 24 key vitamins & minerals.

Lifestyle Education

Lifestyle Education Series™ modules help patients relearn how to approach food and eating.

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Typical Results At 26 Weeks1:

OPTIFAST® completed a year-long, randomized controlled study of the OPTIFAST® Program for weight loss. The results? OPTIFAST® Program generated twice as much weight loss and higher rates of clinically meaningful weight loss, versus a reduced calorie food based program.+

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+Modified version of Diabetes Prevention Program (DPP) diet.

AVERAGE WEIGHT LOSS

Approx. 30 lb

at 26 weeks1

HYPERTENSION

10%-15%

average decrease in blood pressure2

CHOLESTEROL

15%

average decrease in total cholesterol

GLUCOSE

Lower

blood glucose levels vs. baseline4

 

Long-Term Health

AFTER 1 YEAR

OPTIFAST® patients who actively participate in a 26-week program typically lose approximately 30 lbs. (2x more compared to a reduced-calorie food-based+ program) and maintain approximately a 25-lb. weight loss at 1 year.1

AFTER 2 YEARS

OPTIFAST® patients maintained an average weight loss of approximately 19 lbs. after 2 years and 15 lbs. after 3 years from starting the program.5

GET STARTED

+Modified version of Diabetes Prevention Program (DPP) diet.

The Weight Loss Journey

Participation in the OPTIFAST® Program includes 3 key phases designed to help patients lose weight by helping change their relationship with food and eating. Each patient receives an individual evaluation to customize the program to meet their individual needs.

ACTIVE WEIGHT LOSS PHASE

During this phase, the patient will eat a diet of OPTIFAST® full meal replacement products.

TRANSITION PHASE

Self-prepared foods are gradually reintroduced into the diet, while patients attend classes to help change the way they think about and approach food and eating.

MAINTENANCE PHASE

Patients should continue to attend ongoing support sessions to help them maintain their weight loss and manage weight long-term.

LEARN MORE
START TODAY

1. Ard JD, Lewis KH, Rothberg A, et al. Effectiveness of a total meal replacement program (OPTIFAST® Program) on weight loss: results from the OPTIWIN study. Obesity. 2018; doi: 10.1002/oby.22303.

2. Ard JD, Schroeder MC, Kivilaid K, et al. Practical application of a comprehensive weight management program in patients with and without metabolic syndrome. J Obes Weight Loss Ther. 2014;S4:007.

3. Drawert S, Bedford K, Largent D. Change in glucose, blood pressure, and cholesterol with weight loss in medically obese patients. Obes Res. 1996;4(Suppl 1):67S.

4. Wadden TA, Foster GD, Letizia KA, Stunkard AJ. A multicenter evaluation of a proprietary weight reduction program for the treatment of marked obesity. Arch Intern Med. 1992;152(5):961-966.

5. Krishnaswami A, Ashok R, Sidney S, et al. Real-World Effectiveness of a Medically Supervised Weight Management Program in a Large Integrated Health Care Delivery System: Five-Year Outcomes. Perm J. 2018;22:17-082.

6. Hutcheon DA, et al. Short-Term Preoperative Weight Loss and Postoperative Outcomes in Bariatric Surgery. J Am Coll Surg. 2018;226:514-524. (doi:10.1016/j.jamcollsurg.2017.12.032)

7. Tarnoff M, et al. An evidence based assessment of preoperative weight loss in bariatric surgery. Obes Surg.2008;18:1059-1061.

Success Stories

Check out testimonials from OPTIFAST® patients who have participated in the OPTIFAST® Program. You may discover that their stories are very similar to your own!

Justin*
Canton, OH

Justin* - Canton, OH
Weight Loss: 150 lbs*

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Weight Loss: 150 lbs*

“Taking control of my health has literally given me a new life. "

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Colleen*
Chicago, IL

Colleen* - Chicago, IL
Weight Loss: 86 lbs*

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Weight Loss: 86 lbs*

“This program has allowed me to learn more about myself and accomplish things that a year ago I would not have done. "

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Dianna*
Scottsdale, AZ

Dianna* - Scottsdale, AZ
Weight Loss: 98 lbs*

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Weight Loss: 98 lbs*

“I am stronger than I knew! "

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Vicki*
Anchorage, AK

Vicki* - Anchorage, AK
Weight Loss: 63 lbs*

Read Now

Weight Loss: 63 lbs*

“I just wanted to feel good. I just wanted to look good. The benefits turned out to be far bigger ... "

Read Now

VIEW ALL SUCCESS STORIES

* The above patients are OPTIFAST® NEW YOU winners. The success stories of OPTIFAST® New You Contest winners are representative of those individuals only and do not represent all OPTIFAST® patients. OPTIFAST® patients who actively participate in a 26 week program typically lose approximately 30 lbs. and maintain approximately a 25 lbs. weight loss at year 1. In a separate study, OPTIFAST® patients maintained an average weight loss of approximately 19 lbs. after 2 years and a 15 lbs. after 3 years from starting the program.

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Contact Us
1-800-662-2540
Monday – Friday: 8am to 8pm, EST
Nestlé HealthCare Nutrition
Consumer and Product Support
445 State Street
Fremont, MI 49412
info@optifast.com

About OPTIFAST®

  • Products
  • Why OPTIFAST®
  • Success Stories
  • Help Center

  • FAQ's
  • Terms & Conditions
  • Contact Us

    Contact Us
    1-800-662-2540
    Monday – Friday: 8am to 8pm, EST
    Nestlé HealthCare Nutrition
    Consumer and Product Support
    445 State Street
    Fremont, MI 49412
    info@optifast.com
    Unless otherwise indicated, all trademarks are owned by Société des Produits Nestlé S.A., Vevey, Switzerland or used with permission. © 2025 Nestlé.
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