L-Theanine Supplement
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
Recommended Use
Suggested Use: Take one capsule with or without food to promote feelings of relaxation and reduce stress. Do not consume more than 8 capsules in one day and space out doses 3-4 hours. Directions: Take (1) capsule (1/2 a serving) or (2) capsules (full serving) early in the day on an empty stomach or as recommended by a healthcare practitioner.
Warnings
Warning: Consult your physician before using this product, especially if you are on other medication such as SSRIs. Do not consume more than 8 capsules per day, allowing at least 3 hours between doses. Do not take this product if you are pregnant or nursing, consult your physician if you are on other medications. Discontinue use and consult your physician immediately if any adverse reactions occur
Frequently Asked Questions
What is Double Wood L-Theanine Supplement's Formulate score?
Double Wood L-Theanine Supplement scores 95 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 Double Wood L-Theanine Supplement worth it?
Double Wood L-Theanine Supplement scores 95/100 (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 Double Wood L-Theanine Supplement?
Each serving contains L-Theanine (200 mg). Serving size: 1 Capsule(s). 120 servings per container.
How do I take l-theanine supplement?
Suggested Use: Take one capsule with or without food to promote feelings of relaxation and reduce stress. Do not consume more than 8 capsules in one day and space out doses 3-4 hours. Directions: Take (1) capsule (1/2 a serving) or (2) capsules (full serving) early in the day on an empty stomach or as recommended by a healthcare practitioner.
Who makes L-Theanine Supplement?
L-Theanine Supplement is made by Double Wood. See Formulate's full grade and product lineup for Double Wood on its brand page.
Is Double Wood L-Theanine Supplement third-party tested?
Double Wood lists the following certifications and testing for this product: Non-GMO, Gluten-Free, Third-Party Tested.
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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.