BioStacks
Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.
Ingredients (2)
L-Arginine
25%Dose
500 mg
Target
2000–6000 mg
Form
—
L-Citrulline
8%Dose
250 mg
Target
3000–6000 mg
Form
—
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
How to Take It
Take it anytime
Take between meals — food blunts the rise in plasma arginine.
On an empty stomach
On the label
As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$17.95
Cheaper than 75% of 33 citrulline 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.