BioStacks
Best for
Ingredients (3)
L-Leucine
100%Dose
3000 mg
Target
2000–5000 mg
Form
—
L-Isoleucine
100%Dose
1500 mg
Target
1500–4000 mg
Form
—
L-Valine
100%Dose
1500 mg
Target
1500–4000 mg
Form
—
Nutrition
Calories, macros & sodium.
- Sodium40 mg
Other Ingredients (5)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
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
Malic AcidAcidulant
Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
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
Directions: Blend, shake, or briskly stir 2 scoop (7.3 g) into 8 oz of chilled water before and after exercise or with a meal as directed by your healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$52.25
Pricier than 91% of 24 isoleucine supplements
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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.