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Product answer

Who should avoid L-theanine?

Caution depends on allergies, medical conditions, medication use, pregnancy or breastfeeding, dose, and total intake.

Mixed evidence Medium safety attention Experience: Early

Quick answer

Be cautious with L-Theanine 200 mg Suntheanine Capsules if you have relevant allergies, take medications that may interact with L-Theanine, are pregnant or breastfeeding, or have a medical condition affected by this supplement category.

What to check next

Allergy and sensitivity context · Medication and condition cautions · Ingredient list: L-Theanine

Label Check

Last checked
2026-08-05
Next check
2026-09-04
Label confidence
Structured Source Review

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Price Per Serving, Availability, Servings Per Container, Label Warnings, Testing Claims

Product labels, warnings, availability, and prices can change. Recheck the current product label before buying.

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What to compare

Caution depends on allergies, medical conditions, medication use, pregnancy or breastfeeding, dose, and total intake.

Product Context

L-Theanine 200 mg Suntheanine Capsules is a L-Theanine product from Source Naturals. Label context includes Capsule, serving size 1 capsule, Price context: retailer price was not available at last check; retailer prices can change.

Safety and Uncertainty

  • Compare dose, caffeine/sedative stacking, timing, and medication context before choosing.
  • Medication: Screen sedatives, antidepressants, blood pressure medicines, and other relevant medications before use.
  • Condition: Pregnancy, breastfeeding, chronic conditions, and unusual symptoms need professional guidance.
  • Allergy: Check capsule, softgel, coconut, gelatin, soy, flavor, and excipient details on the current label.
  • Possible side effect: Drowsiness, digestive discomfort, or unexpected relaxation effects can occur depending on user context.
  • Pregnancy/Breastfeeding: Ask a healthcare professional before use during pregnancy or breastfeeding.
  • Ingredient context: Screen pregnancy, breastfeeding, sedatives, blood pressure medication, and daytime sleepiness context.

Results and fit can vary. Check the label and safety notes before choosing.

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