Suntheanine® L-Theanine 125 mg Stress-Relax | 60 Vegetarian Capsules | Natural Factors USA

Please note we will be closed from December 24th-28th 2025, any orders placed during this period will be processed as soon as possible in the order they were received beginning Monday, December 29th, 2025. For any order inquiries sent to ordersusa@naturalfactors.com, we will also respond in the order received beginning Monday, December 29th, 2025.

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Natural Factors

Suntheanine® L-Theanine 125 mg

Suntheanine® L-Theanine 125 mg

Stress-Relax®

$20.21
$26.95 $20.21
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There’s a reason why drinking a cup of tea is so relaxing. True tea (made from the Camilla sinensis plant) contains L-theanine, an amino acid that promotes mental calmness.* (In fact, the tea plant was formerly called Thea sinensis!)

A purified, clinically researched, and form of L-theanine supported by more than 50 studies demonstrating its safety and efficacy. It safely relaxes but won’t cause drowsiness.*

  • Relaxes and promotes mental calmness*
  • Supports sleep quality*
  • Produced via a proprietary enzymatic fermentation process guaranteeing pure L-theanine for maximum effectiveness*
  • Supported by over 50 clinical studies

Supplement Facts

Serving Size 2 Vegetarian Capsules

Servings Per Container 30

Amount Per Serving
Suntheanine® L-Theanine 250 mg**
** Daily Value not established.
Other Ingredients: Rice powder, vegetarian capsule (carbohydrate gum [cellulose], purified water), magnesium stearate (vegetable grade), silica.

SKU: 4830U

4830U

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Suntheanine® L-Theanine 125 mg 125 mg Vegetarian Capsules

What Else Should You Know?

Suggested Usage

1–2 capsules 1–2 times per day or as directed by a health professional.

As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery. Keep out of the reach of children.

Allergy Information

Contains no artificial colors, preservatives, or sweeteners; no dairy, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs.