Caffeine + L-Theanine Capsules
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: Nutricost Caffeine + L-Theanine Capsules
Balanced Combination: Each serving of Nutricost Caffeine with L-Theanine delivers 100 mg of caffeine and 100 mg of L-theanine, providing a harmonious blend of these two ingredients.
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Rice flour, gelatin capsule, microcrystalline cellulose, magnesium stearate (vegetable source), silica
Recommended Use
As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.
Warnings
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. This product contains as much caffeine as about 1 cup of coffee. Do not consume more than 400 mg of caffeine from any source in a 24 hour period. Stor
Frequently Asked Questions
What is Nutricost Caffeine + L-Theanine Capsules's Formulate score?
Nutricost Caffeine + L-Theanine Capsules scores 97 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 Caffeine + L-Theanine Capsules worth it?
Nutricost Caffeine + L-Theanine Capsules scores 97/100 (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 Caffeine + L-Theanine Capsules?
Each serving contains Caffeine Anhydrous (100 mg), L-Theanine (100 mg). Serving size: 1 Capsule. 30 servings per container.
How do I take caffeine + l-theanine capsules?
As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.
Who makes Caffeine + L-Theanine Capsules?
Caffeine + L-Theanine Capsules is made by Nutricost. See Formulate's full grade and product lineup for Nutricost on its brand page.
Is Nutricost Caffeine + L-Theanine Capsules third-party tested?
Nutricost lists the following certifications and testing for this product: Third Party Tested, GMP, FDA Registered, Vegan Options.
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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.