BioStacks
Best for
Ingredients (5)
Vitamin D3
100%Dose
2000 IU
Target
1000–5000 IU
Form
Premium
DL-1855™ L-Leucyl-L-Leucine Monohydrate
100%Dose
2000 mg
Target
2000–5000 mg
Form
—
myHMB
100%Dose
3000 mg
Target
1000–1500 mg
Form
Premium
Calcium
100%Dose
390 mg
Target
200–600 mg
Form
Not listed
Vitamin C
28%Dose
70 mg
Target
250–2000 mg
Form
Budget
Other Ingredients (1)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
On the label
Combine one (1) scoop (5.37 g) with 12-16 fl. oz. of your favorite flavored supplement, sports drink or juice.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$64.99
Pricier than 94% of 28 leucine 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.