L-Theanine

CAS Number: 3081-61-6
Source & Form: Naturally found in green tea leaves (Camellia sinensis); white to off-white crystalline powder
Applications: Stress relief, cognitive support, mood balance, sleep aids, nootropic blends
Advantages:

  • Promotes calm without drowsiness
  • Enhances focus and mental clarity
  • Supports restful sleep and reduced anxiety

What is L-Theanine?
L-Theanine is a naturally occurring amino acid most commonly found in tea leaves, especially green tea. It is known for its unique ability to promote relaxation without causing sedation. By modulating neurotransmitters such as GABA, dopamine, and serotonin, L-Theanine helps reduce stress and improve mental clarity—making it a popular ingredient in nootropics, sleep formulas, and mood-balancing supplements.

Produced via enzymatic fermentation or extraction, L-Theanine is 100% pure, vegan-friendly, and safe for daily use.


Key Benefits:

  • Reduces mental stress and anxiety without drowsiness
  • Improves focus, attention, and learning capacity
  • Promotes deeper, more restorative sleep
  • Synergizes well with caffeine for clean energy and focus
  • Non-habit-forming and gentle on the body

Applications:

  • Nootropic and cognitive support supplements
  • Stress relief capsules and calming teas
  • Sleep aid formulas (often combined with melatonin or magnesium)
  • Focus-enhancing blends for work or study
  • Functional beverages and wellness shots

FAQs:
Q: Does L-Theanine make you sleepy?
A: No, it promotes relaxation without sedation—ideal for daytime focus or night-time calm.

Q: Can I take it with caffeine?
A: Yes! It’s commonly paired with caffeine to reduce jitters and improve clean focus.

Q: Is it safe for daily use?
A: Yes, L-Theanine is well-tolerated and non-habit-forming.

Q: Is it vegan?
A: Yes, our L-Theanine is produced through plant-based fermentation.

Sample Package

Aluminum Foil Bag

Barrel Package

lron-ringed Cardboard Drum

General Package

25kqs by Drum

General Package

25kqs by Drum

About the Manufacturer

Anrui Biotechnology Co., Ltd. is a specialized exporter of high-quality food ingredients and additives. We focus on global trade and custom formulation services for functional ingredients, delivering consistent, compliant, and premium-quality supply solutions to our worldwide clients.

Headquartered in Guangzhou, China, Anrui collaborates with GMP-certified manufacturing partners equipped with advanced testing facilities, including HPLC, UV-VIS spectrophotometry, and microbiological analysis, ensuring every batch meets strict international quality and regulatory standards.

Our products are exported to over 60 countries, serving industries such as food, beverages, supplements, and cosmetics.

Why Choose Anrui Bio.

Ready Stock & Fast Shipping
We maintain regular inventory of our most popular sweeteners in our 6,000 m² warehouse, ensuring ready stock and 24-hour dispatch for most orders.
Extensive Product Range
From natural sweeteners like stevia and monk fruit to sugar alcohols and synthetic options, we offer a complete range of sweetening solutions.
Comprehensive Product Certification
Our products are exported globally with full documentation support (COA, MSDS, etc.).
Global Export Experience
Trusted by clients in 50+ countries, we understand the requirements of international food and nutrition markets.

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Bulk Ingredients Ready When You Are

Fast-moving ingredients for food factories, ready for immediate dispatch.