PlainVitamins

GI Sustain

by Metagenics · powder · 1.56 pounds

  • On the market (NIH)
  • UPC 7 55571 93469 7
  • DSLD label 323360
  • Serving 49 g (about 2 scoops)
  • 14 servings

GI Sustain by Metagenics lists 28 ingredients, 28 with an amount per serving of 49 g, such as 1,200 mcg of vitamin A, 102 mg of vitamin C, 1.2 mcg (48 IU) of vitamin D and 33.5 mg of vitamin E, beside 8 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on February 23, 2025.

What is in GI Sustain?

Each row as the label prints it, per serving of 49 g. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

GI Sustain: Supplement Facts rows against the market (DSLD label 323360, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories170 Calories
Total Fat5 g6%Fat (unspecified) in GI Sustain against 11,965 products5 g per serving; the middle half of products list 1 g to 2.5 g, the median 1.5 g.5 g

Higher than 89% of 11,965 products listing fat (unspecified) (median 1.5 g). Per day at the most servings: 10 g.

Saturated Fat1.5 g8%Saturated fat in GI Sustain against 5,234 products1.5 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1 g.1.5 g

Higher than 66% of 5,234 products listing saturated fat (median 1 g). Per day at the most servings: 3 g.

Total Carbohydrates24 g13%Carbohydrate in GI Sustain against 21,979 products24 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.24 g

Higher than 96% of 21,979 products listing carbohydrate (median 3 g). Per day at the most servings: 48 g.

Dietary Fiber5 g7%Fiber in GI Sustain against 6,987 products5 g per serving; the middle half of products list 1 g to 4 g, the median 2 g.5 g

Higher than 82% of 6,987 products listing fiber (median 2 g). Per day at the most servings: 10 g.

Total Sugars9 gSugar in GI Sustain against 11,807 products9 g per serving; the middle half of products list 1 g to 4 g, the median 2 g.9 g

Higher than 92% of 11,807 products listing sugar (median 2 g). Per day at the most servings: 18 g.

Added Sugars5 g10%
Protein13 g26%Protein in GI Sustain against 8,985 products13 g per serving; the middle half of products list 2 g to 24 g, the median 16 g.13 g

54% of 8,985 products listing protein give more (median 16 g). Per day at the most servings: 26 g.

Vitamin Aas Beta-Carotene, Retinyl Palmitate62.5% as beta-carotene1,200 mcg133%
Vitamin Cas Ascorbic Acid102 mg113%Vitamin C in GI Sustain against 18,583 products102 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg102 mg

Higher than 50% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 204 mg.

Vitamin Das Cholecalciferol50 IU1.2 mcg (48 IU)6%Vitamin D in GI Sustain against 14,175 products1.2 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg1.2 mcg

98% of 14,175 products listing vitamin D give more (median 15 mcg). Per day at the most servings: 2.4 mcg.

Vitamin Eas D-Alpha-Tocopheryl Acetate33.5 mg223%
Thiamineas Thiamine Hydrochloride0.5 mg42%Thiamin in GI Sustain against 9,830 products0.5 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg0.5 mg

91% of 9,830 products listing thiamin give more (median 5 mg). Per day at the most servings: 1 mg.

Riboflavin0.6 mg46%Riboflavin in GI Sustain against 9,824 products0.6 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg0.6 mg

89% of 9,824 products listing riboflavin give more (median 4 mg). Per day at the most servings: 1.2 mg.

Niacinas Niacinamide10 mg63%Niacin in GI Sustain against 12,413 products10 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg10 mg

77% of 12,413 products listing niacin give more (median 20 mg). Per day at the most servings: 20 mg.

Vitamin B6as Pyridoxine Hydrochloride0.7 mg41%Vitamin B6 in GI Sustain against 15,277 products0.7 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg0.7 mg

93% of 15,277 products listing vitamin B6 give more (median 6 mg). Per day at the most servings: 1.4 mg.

Folateas Metafolin235 mcg DFE59%
Vitamin B12as Methylcobalamin2.1 mcg88%Vitamin B12 in GI Sustain against 14,425 products2.1 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg2.1 mcg

93% of 14,425 products listing vitamin B12 give more (median 36 mcg). Per day at the most servings: 4.2 mcg.

Biotin105 mcg350%Biotin in GI Sustain against 9,447 products105 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg105 mcg

60% of 9,447 products listing biotin give more (median 200 mcg). Per day at the most servings: 210 mcg.

Pantothenic Acidas Calcium D-Pantothenate100 mg2,000%Pantothenic Acid (Vitamin B5) in GI Sustain against 10,060 products100 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg100 mg

Higher than 86% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg). Per day at the most servings: 200 mg.

Calciumas Calcium Citrate, Dicalcium Phosphate300 mg23%Calcium in GI Sustain against 17,831 products300 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg300 mg

Higher than 77% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 600 mg.

Ironas Ferrous Fumarate3.6 mg20%Iron in GI Sustain against 6,910 products3.6 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg3.6 mg

58% of 6,910 products listing iron give more (median 5 mg). Per day at the most servings: 7.2 mg.

Phosphorusas Dicalcium Phosphate, Dipotassium Phosphate180 mg14%Phosphorus in GI Sustain against 3,786 products180 mg per serving; the middle half of products list 45 mg to 200 mg, the median 90 mg.DV 1,250 mgUL 4,000 mg180 mg

Higher than 72% of 3,786 products listing phosphorus (median 90 mg). Per day at the most servings: 360 mg.

Magnesiumas Magnesium Citrate120 mg29%Magnesium in GI Sustain against 14,003 products120 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg120 mg

Higher than 64% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 240 mg.

Zincas Zinc Gluconate7.5 mg68%Zinc in GI Sustain against 13,186 products7.5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg7.5 mg

63% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 15 mg.

Copperas Copper Gluconate0.5 mg56%Copper in GI Sustain against 6,468 products0.5 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.5 mg

68% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 1 mg.

Manganese1.3 mg57%Manganese in GI Sustain against 7,016 products1.3 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg1.3 mg

67% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 2.6 mg.

Chromiumas Chromium Picolinate75 mcg214%Chromium in GI Sustain against 7,825 products75 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg75 mcg

58% of 7,825 products listing chromium give more (median 100 mcg). Per day at the most servings: 150 mcg.

Sodium20 mg1%Sodium in GI Sustain against 14,514 products20 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.20 mg

67% of 14,514 products listing sodium give more (median 55 mg). Per day at the most servings: 40 mg.

Potassiumas Dipotassium Phosphate300 mg6%Potassium in GI Sustain against 11,614 products300 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg300 mg

Higher than 88% of 11,614 products listing potassium (median 99 mg). Per day at the most servings: 600 mg.

Isomalto-Oligosaccharides3.4 g
L-Glutamine500 mgGlutamine in GI Sustain against 1,850 products0.5 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.0.5 g

63% of 1,850 products listing glutamine give more (median 1 g). Per day at the most servings: 1 g.

Glycine100 mgGlycine in GI Sustain against 1,078 products100 mg per serving; the middle half of products list 100 mg to 846 mg, the median 300 mg.100 mg

64% of 1,078 products listing glycine give more (median 300 mg). Per day at the most servings: 200 mg.

DL-Methionine100 mgDL-Methionine in GI Sustain against 151 products100 mg per serving; the middle half of products list 25 mg to 132.5 mg, the median 50 mg.100 mg

Higher than 56% of 151 products listing DL-methionine (median 50 mg). Per day at the most servings: 200 mg.

L-Lysineas L-Lysine Hydrochloride35 mgLysine in GI Sustain against 1,250 products35 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.35 mg

91% of 1,250 products listing lysine give more (median 500 mg). Per day at the most servings: 70 mg.

L-Threonine34 mgTHREONINE in GI Sustain against 590 products34 mg per serving; the middle half of products list 140 mg to 886.25 mg, the median 500 mg.34 mg

91% of 590 products listing THREONINE give more (median 500 mg). Per day at the most servings: 68 mg.

L-Cysteineas L-Cysteine Hydrochloride25 mgCysteine in GI Sustain against 516 products25 mg per serving; the middle half of products list 30 mg to 200 mg, the median 85 mg.25 mg

76% of 516 products listing cysteine give more (median 85 mg). Per day at the most servings: 50 mg.

Source: NIH ODS Dietary Supplement Label Database, label 323360 (entered February 23, 2025), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 98% of the 14,175 products that print an amount of vitamin D list more than its 1.2 mcg (48 IU) of vitamin D (median 15 mcg (600 IU)).
  • 91% of the 9,830 products that print an amount of thiamin list more than its 0.5 mg of thiamin (median 5 mg).
  • 89% of the 9,824 products that print an amount of riboflavin list more than its 0.6 mg of riboflavin (median 4 mg).
  • 93% of the 15,277 products that print an amount of vitamin B6 list more than its 0.7 mg of vitamin B6 (median 6 mg).
  • 93% of the 14,425 products that print an amount of vitamin B12 list more than its 2.1 mcg of vitamin B12 (median 36 mcg).
  • 91% of the 1,250 products that print an amount of lysine list more than its 35 mg of L-lysine (filed by NIH under lysine) (median 500 mg).

The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with GI Sustain's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Directions: Blend, shake, or briskly stir about 2 level scoops (49 grams) of GI Sustain into 8 ounces of chilled water or juice twice daily or as directed by your healthcare practitioner. For highly sensitive individuals, consider reducing consumption to 1/2 to 1 scoop with 4 to 5 ounces of chilled water or juice daily during the first 3 to 4 days before starting a full daily dose.
Warnings
Warning: Excess vitamin A intake may increase the risk of birth defects.
Pregnant women and women who may become pregnant should not exceed 3,000 mcg of preformed vitamin A (retinyl palmitate) per day unless instructed to do so by a healthcare practitioner
Caution: Keep out of the reach of children.
Tamper evident: Do not use if safety seal is missing or broken.
Practitioner Exclusive
Allergens and what it does not contain
This product is non-GMO and gluten-free.
Certified Gluten Free GFCO.org (Gluten-Free Certification Organization)
Gluten-free Non-GMO
No MSG
Storage
Storage: Keep tightly closed in a cool, dry place.
Contents sold by weight, not volume. Some settling may occur during shipping and handling. Serving size is measured by weight with a scoop included for your convenience. The amount of product contained in two scoops may be above or below 49 grams due to variations in handling and product density.

Source: label statements in DSLD label 323360.

What else is on the label?

Other ingredients: Rice Protein Concentrate, Rice Syrup, Solids, Apple Fiber, Olive Oil, Medium Chain Triglyceride, Acacia Gum, Silica, Natural Flavors, Rice Maltodextrin.

How many labels does GI Sustain have?

4 labels are on file under this name since December 22, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 323360 (current) Entered February 23, 2025 · on the market · 1.56 pounds · UPC 7 55571 93469 7
  2. Label 295712 Entered September 25, 2023 · off the market February 23, 2024 · 1.51 pounds · UPC 7 55571 93469 7
  3. Label 265256 Entered June 16, 2022 · off the market February 23, 2024 · 1.51 pounds · UPC 7 55571 93469 7
  4. Label 209774 Entered December 22, 2019 · off the market October 1, 2021 · 1.85 lbs · UPC 7 55571 93469 7

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Metagenics (manufacturer), Gig Harbor, WA. All Metagenics products.

Where next?