GI Sustain™

Gastrointestinal Nutritional Support*
GI Sustain™
GI Sustain™

GI Sustain™ is designed to provide gastrointestinal nutritional support. The formula is uniquely designed to help promote the growth of beneficial bacteria by including prebiotic nutrients, combined with readily digestible macronutrients.*

GI Sustain features L-glutamine and prebiotic isomalto-oligosaccharides (IMOs) to promote gastrointestinal health.*

  • Nourishes the cells of the intestinal mucosa*
  • Features rice protein concentrate supplemented with L-lysine and L-threonine for an naturally-derived amino acid profile*
  • Formulated with rice syrup solids as a naturally-derived energy source*
  • Features medium-chain triglycerides, a readily absorbed and metabolized lipid source*
  • Features prebiotic IMOs to selectively nourish beneficial bacteria, including lactobacilli and bifidobacteria*
  • Formulated with zinc and L-glutamine to nutritionally support gastrointestinal mucosa integrity*
  • Features methylated vitamin B12 and calcium L-5 methyltetrahydrofolate, a bioavailable folate*
Serving size: About 2 Scoops (49 g)
Size Description:

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Label & Supplement Facts

Average Customer Rating: (3 Reviews) This item can be reviewed only by verified buyers

These reviews have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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I have been drinking this product for several years with great success with my gut issues. However, the recent change in the formula has made it impossible for me to drink. I cannot tolerate it any longer because I have an immediate reaction to it.
Whatever you did isn't working for me.
My doctor recommended another one of your products. Hopefully, I can tolerate that one.

6 of 6 people found this review helpful. Do you? yes no  Certified buyer

Was absolutely amazing, the change is not good for me

I have basically lived on this product for close to 10 years. and it gave me back the ability to live life more normally! They made one small change from rice flour to apple fiber and I am having trouble tolerating it. Hope they change back to previous formulation.

5 of 5 people found this review helpful. Do you? yes no  Certified buyer


I loved the vanilla flavor, very disappointed with the new flavor. This product is great but not the taste

2 of 2 people found this review helpful. Do you? yes no  Certified buyer