ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors
  • Partners

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2026 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
L-theanine

L-theanine

Unknown

#Other
88
Safety90
Efficacy85
Transparency50
Based on Examine, Wikipedia, and 23 other sources

Overview

L-theanine is an amino acid commonly found in tea, known for promoting relaxation and focus without drowsiness.

Is it for you?

Best For: Individuals seeking stress reduction, improved focus, better sleep, and caffeine synergy

Skip If: You are pregnant, nursing, or on specific medications without consulting a doctor.

How to Use

Typically, 100-200mg per serving, taken as needed for relaxation or focus. Consult product label for specific instructions.

Frequency:

Daily

Best Time:

Morning or Evening

When:

Anytime, with or without food

Who Should Use This

Best For:

Individuals seeking stress reduction, improved focus, better sleep, and caffeine synergy

Recommended Articles

L-Theanine Dosage for Focus: Avoid Drowsiness

L-Theanine Dosage for Focus: Avoid Drowsiness

200-400mg daily of L-theanine enhances focus without causing drowsiness, with benefits amplified when combined with caffeine.

Safe Energy Supplement Ingredients for Daily Use

Safe Energy Supplement Ingredients for Daily Use

Caffeine, when consumed in doses up to 400mg per day, is a safe and effective ingredient in energy supplements for healthy adults.

Best Sleep Supplements: Ingredients & Doses

Best Sleep Supplements: Ingredients & Doses

Melatonin (0.5-5 mg) and Valerian root (300-600 mg) are highly recommended for improving sleep quality.

Avoiding Stimulants: A Guide for Sensitive Individuals

Avoiding Stimulants: A Guide for Sensitive Individuals

Identify stimulant ingredients to avoid, understand their effects, discover alternatives, and learn label-reading tips for sensitivity.