100% Customer Satisfaction Guarantee

America's #1 Rated Catalog/Internet Merchant
Based on Customer Satisfaction

Doctor's Best

Suntheanine L-Theanine

Swanson $15.29
Retail $28.99 Save 47%
Add To Order
Add to Favorites

Recently Viewed Items

Look here for an easy way to
navigate to your previously
viewed products.

In Stock
90 Veg Caps
  • Doctor's Best Suntheanine L-Theanine supplement

  • Promotes healthy stress management

  • Does not cause drowsiness, but may support healthy sleep

Doctor's Best Suntheanine® L-Theanine supplement supports relaxation without drowsiness to help manage stress and tension. Suntheanine is the premier, patented form of the amino acid L-theanine. Suntheanine is the purest form of L-theanine on the market today, derived from the amino acid in green tea that is responsible for the relaxation-inducing effect of tea consumption. Suntheanine has been shown to create an alert state of relaxation, and it may also support sleep quality and mental acuity.

Product Label

Supplement Facts

Serving Size 1 Capsule

Servings Per Container 90 servings

  Amount Per Serving %Daily Value
Suntheanine® L-theanine 150 mg

†Daily Value not established.

Other ingredients: Rice powder, modified cellulose (vegetarian capsule).

Suggested adult use: Take 1 capsule daily, or as directed by a healthcare professional.

Suitable for Vegetarians

Contains Nothing Other Than Listed Ingredients.

Terms and Ingredient Definitions

Doctor's Best Suntheanine L-Theanine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Suntheanine L-Theanine 4.8 5 2 4
Great for Relaxation Suntheanine L-Theanine is an excellent supplement for those who are stressed. The supplement works within 15-30 minutes of taking and returns one to a more relaxed state of mind and body (just like a good cup of hot tea). This product was the most effective of the supplements I have taken in reducing stress and has helped me during emotionally fragile times to relax and regain control. December 16, 2013
I like Doctor's Best I like this brand of supplements, everything I have tried from them seems to be of high quality October 16, 2013
1-3 of 3

7 Leaf Guarantee

Swanson’s 7-Leaf Guarantee

Earning your trust is our first
and only priority.

Top of Page