The  program

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

What are you looking for?


Some OPTIFAST® clinics and bariatric surgery centers offer special programs that help patients lose weight in advance of their weight loss surgery.

"Why should I lose weight beforehand,” ask some patients, “when I’ll lose so much weight afterward?” The fact is, the heavier you are, the greater the risks you and your surgeon face.

Clinical data shows that using the OPTIFAST® program before weight loss surgery can help patients lose enough weight to significantly reduce health risks associated with various procedures.6 Moreover, making lifestyle changes, such as those learned as part of the OPTIFAST® program, can help prepare patients for life after surgery.

Using OPTIFAST® Before Weight Loss Surgery

If you are considering weight loss surgery or are scheduled for a procedure, talk to your physician about the benefits of pre-surgical use of OPTIFAST®. It could make a meaningful difference in your health before surgery, during surgery, and afterward.

Pre-operative weight loss with a medically-monitored weight loss program—which includes nutritionally complete meal replacements and behavior modification— can provide clinical benefits to both pre- and post-bariatric surgery patients:

  • 26 lb average pre-operative weight loss 7
  • Reduced laproscopic procedure time 6
  • Increased weight loss first year post-bariatric surgery 6

OPTIFAST® Products for Weight Loss Surgery

Take advantage of two powerful OPTIFAST® tools to prepare for weight loss surgery and thrive afterward. The OPTIFAST® weight loss program offers meal replacement formulas, along with education and support to prepare for weight loss surgery and post-surgical behavior changes. OPTISOURCE supplements are part of the OPTIFAST® product line that have been designed to meet the specialized nutritional requirements of post-weight loss surgery patients.

Set yourself up for the best outcomes from weight loss surgery procedures with the OPTIFAST® program and OPTIFAST® Products:

Before Surgery

Average weight loss of 26 pounds over 12 weeks of pre-surgical treatment(1)

OPTIFAST® Ready to Drink Shakes

Available in Vanilla, Chocolate and Strawberry flavors

After Surgery

Designed to meet the unique nutritional challenges of the post weight loss surgery patient

OPTISOURCE® Chewable Vitamin and Mineral Supplement

Available in Citrus flavor. Talk to your HCP about your specific needs/requirements

OPTIFAST® as an Alternative to  Weight Loss Surgery

The cost of weight loss surgery can be substantial. In addition to financial considerations, weight loss surgery may also be associated with complications during surgery and significant recovery time. For patients who are considering weight loss surgery, the OPTIFAST® program represents a low-risk, lower-cost alternative to surgical weight loss procedures and it can usually be incorporated into a patient’s regular schedule at work and at home.4

Sucess Stories

Everyday, OPTIFAST® is helping people like you discover the benefits of a healthy lifestyle go far beyond weight loss. Find out what real patients have to say about their OPTIFAST® experience.


*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 OPTIFAST® studies have shown an average weight loss of approximately 30 lbs. at 26 weeks, 25 lbs. at 1 year, 19 lbs. after 2 years, and 15 lbs. after 3 years from starting the program.1,2

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.