GI Sustain
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GI Sustain

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  • About
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GI Sustain is a medical food formulated to provide specialized nutritional support, including amino acids and prebiotic fiber, combined with readily digestible, low-allergenic-potential macronutrients for patients with leaky gut syndrome. Featuring L-glutamine and isomalto-oligosaccharides (IMO), this formula supports intestinal mucosal integrity and promotes the growth of beneficial bacteria to address dysbiosis associated with leaky gut syndrome. This product supports microbial balance and nourishes the cells of the colonic mucosa. It features low-allergy-potential rice protein concentrate supplemented with L-lysine HCl and L-threonine for an improved protein source. It provides rice syrup solids as a natural energy source and a readily absorbed and metabolized lipid source. It provides the prebiotic IMO to selectively nourish beneficial bacteria, including lactobacillus and bifidobacteria. IMO is a gentle fiber that is naturally sweet but has a low-glycemic index. GI Sustain is formulated with nutrients such as zinc gluconate and L-glutamine to nutritionally support gastrointestinal mucosal integrity.

Medicinal Ingredients: 
Each 2 level scoops (60 g) contains:


Rice protein

15 g


500 mg

Potassium (dipotassium phosphate

300 mg

Calcium (calcium citrate, dicalcium phosphate)

300 mg

Phosphorus (dicalcium phosphate)

175 mg

Magnesium (magnesium citrate)

121 mg

Vitamin C (ascorbic acid)

102 mg

Pantothenic Acid (calcium d-pantothenate)

100 mg


100 mg


100 mg

L-Lysine (L-lysine HCl)

35 mg


34 mg

Vitamin E (d-alpha tocopheryl acetate)

33.5 mcg


25 mg

Zinc (zinc gluconate)

7.5 mg


7 mg

Iron (ferrous fumarate)

3.6 mg


1,500 mcg

Vitamin B6 (pyridoxine HCl)

0.7 mg


0.6 mg

Thiamin (thiamin HCl)

0.526 mg

Copper (copper gluconate)

0.5 mg

Vitamin A (retinyl palmitate)

450 mcg

Folic Acid (calcium L-5-methyltetrahydrofolate)

140 mcg


105 mcg

Chromium (chromium picolinate)

75 mcg

Vitamin B12 (methylcobalamin)

2.1 mcg

Vitamin D (cholecalciferol)

1.25 mcg

Non-medicinal ingredients: Rice syrup solids, rice flour, isomaltooligosaccharides, olive oil, medium-chain triglycerides , natural vanilla flavour, silicon dioxide, and rosemary extract.

Adults: Blend, shake or briskly stir 2 level scoops (60 grams) of GI Sustain with 237 ml (8 fl oz) of water or juice 1-2 times daily or as directed by your healthcare practitioner. Take a few hours before or after taking other medications.

Caution: If pregnant or breast-feeding consult your healthcare practitioner before use. Some people may experience abdominal or gastrointestinal discomfort. May cause nausea, vomiting, diarrhea and/or abdominal cramps. Discontinue use and consult a healthcare practitioner if these symptoms are severe. Hypersensitivity has been known to occur. Do not use following vigorous exercise or acute dehydration. Do not use with other potassium-containing supplements or with potassium containing salt-substitutes. Consult a healthcare practitioner for use beyond 6 months.

GMOs, gluten.