BioStacks
Optimum Nutrition
Gold Standard Pro Gainer (Double Chocolate)
Powder · 165 Grams · 14 servings · $5.36/serving
Best for
Ingredients (22)
Potassium
100%Dose
660 mg
Target
99–500 mg
Form
—
Phosphorus
100%Dose
320 mg
Target
100–500 mg
Form
—
Sodium
100%Dose
340 mg
Target
300–1000 mg
Form
—
Biotin
5%Dose
50 mcg
Target
1000–5000 mcg
Form
—
Calcium
100%Dose
600 mg
Target
200–600 mg
Form
Not listed
Other Ingredients (11)
SucraloseSweetener
Dose context matters. As a trace excipient in a tablet coating or capsule, the amount is minimal and not a meaningful concern. The evidence below applies to the gram-level intakes typical of sweetened protein powders, pre-workouts, and drink mixes: a 2022 human trial (Suez et al., Cell) showed sucralose disrupts gut bacteria and worsens blood sugar control in healthy adults, and a 2023 study (Schiffman et al.) found that sucralose-6-acetate — a compound formed when sucralose is digested — was genotoxic to human cells in vitro. It remains an artificial sweetener with no nutritional purpose.
Acesulfame PotassiumSweetener
Older NTP rodent studies (1980s, contested) reported lymphoma and leukemia at very high chronic doses; modern reviews (FDA 2003, EFSA 2000) concluded no cancer risk at human exposure levels but the issue is not fully resolved (Mishra 2020 review). Animal evidence suggests gut microbiome disruption (Bian 2017 — male mice on Ace-K showed altered microbiota and metabolic markers). Manufacturing uses methylene chloride, with potential residue concerns. Purely cosmetic additive — risk:benefit unfavorable for supplements.
Artificial FlavorsFlavor
Composition is proprietary and not disclosed on the label, so allergens or solvents cannot be verified. Naturally flavored alternatives are more transparent.
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.
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.
Soy LecithinEmulsifier
Widely used emulsifier derived from soybeans
CocoaFlavor
Common food ingredient used for chocolate flavoring in 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 and E in it absorb poorly without one.
With a meal containing fat
Keep it away from high-oxalate foods like spinach, coffee and tea
Space it a couple of hours from Green Tea Leaf Extract
On the label
Just add one heaping scoop of GOLD STANDARD Pro Gainer to 16 fluid ounces of water, milk or your favorite beverage in a shaker cup. Then shake until thoroughly mixed. Use in combination with a healthy, balanced diet and exercise program.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$74.99
Pricier than 94% 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.