L-Theanine Powder
L-Theanine Powder scores 94/100 (A grade). Strengths: All ingredients have Grade A evidence.
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: BulkSupplements L-Theanine Powder
L-Theanine is an amino acid found naturally in green tea leaves, widely used to support a calm, relaxed mental state without causing drowsiness.
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
Bovine Gelatin Capsules
Recommended Use
Take about 200 milligrams with 8-12 oz of water or as directed by your healthcare professional. Use an accurate milligram scale to measure.
Warnings
Consult your healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition. Keep out of reach of children. Store in a cool, dry place.
Frequently Asked Questions
What is BulkSupplements L-Theanine Powder's Formulate score?
BulkSupplements L-Theanine Powder scores 94 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is BulkSupplements L-Theanine Powder worth it?
BulkSupplements L-Theanine Powder scores 94/100 (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 BulkSupplements L-Theanine Powder?
Each serving contains L-Theanine (200 mg). Serving size: 1 Capsule. 365 servings per container.
How do I take l-theanine powder?
Take about 200 milligrams with 8-12 oz of water or as directed by your healthcare professional. Use an accurate milligram scale to measure.
Who makes L-Theanine Powder?
L-Theanine Powder is made by BulkSupplements. See Formulate's full grade and product lineup for BulkSupplements on its brand page.
Is BulkSupplements L-Theanine Powder third-party tested?
BulkSupplements lists the following certifications and testing for this product: Third-Party Tested, cGMP Certified, Made in USA.
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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.