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BulkSupplements Pure L-Theanine Powder (250 grams)

4.7 out of 5 stars 1,543 customer reviews
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About the product
  • Clean & Pure Powder. No Fillers.
  • Factory Sealed Foil Zip Pouch.
  • Lab Tested for Verification & Guaranteed Purity.
  • Relaxing Agent. Helps Lower Blood Pressure.
  • Increase Alertness

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  • BulkSupplements Pure L-Theanine Powder (250 grams)
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Total price: $38.92
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Product Description

L-Theanine Powder

Antioxidant Amino Acid for Mood and Memory

  • Promotes calm and relaxation
  • May improve quality of sleep
  • Benefits heart health
  • May improve focus and memory
  • Lab-tested for purity and quality

What is L-Theanine?

Found in tea leaves and certain species of fungi, l-theanine is an amino acid. Unlike most amino acids, which build proteins for muscles, theanine primarily benefits cognitive health, promoting relaxation, healthy sleep, and focus.

How to Take L-Theanine

As a dietary supplement, take 100mg (scant 1/16 tsp) to 250mg (1/8 tsp) one to three times daily, or as directed by a physician. For healthy sleep, take 20-30 minutes before bed. 

Benefits of L-Theanine

Calmness and Relaxation

Theanine has been shown to affect certain neurotransmitters that ease anxiety and promote calmness. It may also counter the stimulating effect of caffeine and could improve sleep quality. 

Benefits Heart Health

Theanine increases nitric oxide production, which improves blood vessel function and heart health. Studies have found that supplementing with theanine may also lower bad cholesterol levels and blood pressure.

Improves Mood and Memory

Research suggests theanine could boost mood and improve memory, focus, and concentration. This may be due to its ability to increase serotonin, dopamine, and GABA levels in the brain. 


Product details

Size: 250 grams (8.8 oz) Powder
  • Product Dimensions: 6 x 2.5 x 8.2 inches ; 8.8 ounces
  • Shipping Weight: 9.4 ounces (View shipping rates and policies)
  • ASIN: B00E7GESKG
  • UPC: 764442775192 849720005243
  • California residents: Click here for Proposition 65 warning.
  • Average Customer Review: 4.7 out of 5 stars 1,543 customer reviews
  • Amazon Best Sellers Rank: #34,057 in Health & Household (See Top 100 in Health & Household)
  • Product Warranty: For warranty information about this product, please click here

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Important information

Legal Disclaimer
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

Customer Questions & Answers

Customer Reviews

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Top customer reviews

March 6, 2017
Size: 100 grams (3.5 oz) Powder|Verified Purchase
128 people found this helpful
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October 12, 2017
Size: 100 grams (3.5 oz) Powder|Verified Purchase
35 people found this helpful
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June 27, 2016
Size: 250 grams (8.8 oz) Powder|Verified Purchase
65 people found this helpful
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