L-Isoleucine Capsules
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Gelatin, Rice Flour, Stearic Acid, Vegetable Magnesium Stearate
Recommended Use
Suggested Use: As a dietary supplement, take 1-4 capsules daily with 8-12 oz of water or as directed by your healthcare professional.
Warnings
Warning: For healthy individuals 18 years and older. Consult a healthcare professional prior to use if you are pregnant or nursing, taking medication, or have a medical condition. Keep out of reach of children. Do not use if safety seal is broken or missing.
Frequently Asked Questions
What is Nutricost L-Isoleucine Capsules's Formulate score?
Nutricost L-Isoleucine Capsules scores 92 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Nutricost L-Isoleucine Capsules worth it?
Nutricost L-Isoleucine Capsules scores 92/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Nutricost L-Isoleucine Capsules?
Each serving contains L-Isoleucine (2000 mg). Serving size: 1 Capsule(s). 60 servings per container.
How do I take l-isoleucine capsules?
Suggested Use: As a dietary supplement, take 1-4 capsules daily with 8-12 oz of water or as directed by your healthcare professional.
Who makes L-Isoleucine Capsules?
L-Isoleucine Capsules is made by Nutricost. See Formulate's full grade and product lineup for Nutricost on its brand page.
Is Nutricost L-Isoleucine Capsules third-party tested?
Nutricost lists the following certifications and testing for this product: cGMP Certified, FDA Registered, Non-GMO, Gluten-Free, Vegetarian.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.