BioStacks
Best for
Ingredients (29)
Potassium
100%Dose
300 mg
Target
99–500 mg
Form
—
Pantothenic Acid
100%Dose
100 mg
Target
50–500 mg
Form
Premium
Magnesium
100%Dose
120 mg
Target
100–400 mg
Form
Standard
Calcium
100%Dose
300 mg
Target
200–600 mg
Form
Standard
Vitamin E
68%Dose
34 mg
Target
50–268 mg
Form
Premium
Nutrition
Calories, macros & sodium.
- Sodium20 mg
Other Ingredients (9)
MaltodextrinBinder
Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.
Rice ProteinFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports have documented elevated arsenic in rice products). Used as a cheap filler. Incomplete amino acid profile adds no meaningful protein benefit at excipient doses.
Organic Rice SyrupSweetener
High-glycemic glucose syrup that spikes blood sugar. Rice-derived syrups have been documented to carry inorganic arsenic (Jackson et al. 2012), a known carcinogen. 'Organic' does not remove arsenic.
Apple FiberFiller
Dietary fiber derived from apple (pomace).
Medium Chain Triglyceride OilCarrier
Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
How to Take It
Take it anytime
No evidence a formula this broad works better at any particular hour. Take it with a meal containing fat — the vitamins A, D and E in it absorb poorly without one.
With a meal containing fat
Keep it away from high-oxalate foods like spinach, medication and mineral supplements
Space it a couple of hours from Iron
On the label
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 ½ to 1 scoop with 4 to 5 ounces of chilled water or juice twice daily during the first 3 to 4 days before starting a full daily dose.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$102.30
Pricier than 96% of 798 multivitamins
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.