L-Theanine
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 100% of ingredients have research evidence
What the Evidence Says
AI-generated · Qwen 3.6 · grounded in 1 source · methodologyL-theanine is supported by strong evidence for its ability to promote relaxation and reduce stress without causing sedation. Research indicates it may improve cognitive focus and attention when paired with caffeine. The ingredient profile maintains a high safety rating for general consumption.
AI-generated summary based on research evidence. Not medical advice.
Product Label
Label Data
Supplement Facts — Evidence Check
Other Ingredients
Label Claims — Verification
Product Information
Directions for Use
Suggested Use: As a dietary supplement, adults take 1 capsule one to two times daily, or as directed by your health care practitioner. Best when taken with a meal.
Warnings & Precautions
Caution: Do not exceed recommended dosage.
Please consult a physician before consuming this product if you are pregnant or nursing, taking medication or have a medical condition.
Not intended for use by individuals under the age of 18. Keep out of reach of children.
Do not use if safety seal is damaged or missing.
Formulation Notes
L-Theanine is an analog of the amino acids L-glutamine and L-glutamic acid. L-theanine supports relaxation and maintains mental clarity. Superior Labs L-Theanine capsules contain 250mg pure L-Theanine, with absolutely no magnesium stearate, dioxides, preservatives, or other potentially harmful artificial ingredients of any kind.
Metal Safe Heavy Metal Tested
Naturally sourced Pure and potent Induces relaxation Supports brain function Supports cardiovascular function Mental & physical calming This product is formulated, developed and manufactured in an Food and Drug Administration-registered and GMP-compliant facility and is 3rd party inspected by a leading compliance authority for superior quality assurance.
Amino acid
Does not contain: magnesium stearate, dioxides or any potentially harmful ingredients of any kind.
Additional Information
Store in a cool, dry place.
Metal Safe Heavy Metal Tested GMP Compliant Facility Manufactured in the USA with globally sourced ingredients
Product Details
Research Evidence
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.