BioStacks
Best for
Ingredients (3)
L-Leucine
100%Dose
2700 mg
Target
2000–5000 mg
Form
—
L-Isoleucine
43%Dose
650 mg
Target
1500–4000 mg
Form
—
L-Valine
43%Dose
650 mg
Target
1500–4000 mg
Form
—
Other Ingredients (5)
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.
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.
Citric AcidAcidulant
Natural acid derived from citrus fruits
LeucineFlow Aid
Branched-chain amino acid used as a processing aid
Curcuma Oil Extract
Not reviewed yet
How to Take It
Take it anytime
Timing doesn't matter for this one — taking it consistently does.
With or without food
On the label
Mix 5.0g (approx. 2 scoops) with 250ml of water or juice before, during or after exercise. Consume once daily. Powder settles over time, we recommend weighing for the most accurate measure.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
No price yet
What 20 isoleucine supplements cost
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
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.