NOW Foods - L-Theanine

Suppie Report

NOW Foods

L-Theanine

B grade
87/100
SUPPIE SCORE
82/100
EFFICACY
High
SAFETY
88/100
CLEANLINESS

What Does L-Theanine Do?

This well-dosed 200 mg L-Theanine supplement effectively supports relaxation and stress reduction with strong evidence, enhanced by Inositol synergy. Overall safe for healthy adults with minimal risks and no major concerns.
How does L-Theanine promote relaxation without causing drowsiness?
What are the potential benefits of combining L-Theanine with Inositol?
Is 200 mg of L-Theanine a suitable daily dosage for stress management?
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What Are the Benefits of L-Theanine?

Based on proven scientific research

Stress ReductionStrong
Promotes RelaxationStrong
Cognitive SupportModerate
Sleep Quality ImprovementModerate

Good For:

What Are the Side Effects of NOW Foods L-Theanine?

Always consult your health practitioner if in doubt.

RiskLow Risk

Overview

•L-Theanine at 200 mg is well-tolerated with minimal side effects; studies show no serious adverse events in healthy adults.
•Inositol at 100 mg poses low risk, but high doses (>12g) may cause gastrointestinal upset; this formulation stays within safe limits.
•No known significant drug interactions for this product, though it may enhance sedative effects of CNS depressants like benzodiazepines.
•Safe for most adults, including elderly; not recommended for children under 18 without medical advice.
•Vegan formulation with no common allergens; suitable for pregnancy under healthcare supervision, as human data is limited.
•Long-term use appears safe based on clinical trials up to 8 weeks; monitor for rare headaches or dizziness.

Potential Side Effects

Negative Interactions

Allergens

None identified

Inactive Ingredients

Hypromellose (cellulose capsule)
Low Risk
Stearic acid (vegetable source)
Low Risk
Magnesium stearate (vegetable source)
Low Risk
Silicon dioxide
Low Risk

What Are the Ingredients in NOW Foods L-Theanine?

L-Theanine
200 mg
Inositol
100 mg
Hypromellose (cellulose capsule)
Stearic Acid (vegetable source)
Magnesium Stearate (vegetable source)
Silicon Dioxide

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Dosage & Bioavailability

How the active doses and forms in L-Theanine compare to the research.

•L-Theanine — 200 mg per serving; studies use 100 mg/day. Above studied amounts is not the same as unsafe.
•Inositol — 100 mg per serving; studies use 2,000-4,000 mg/day.

Frequently Asked Questions

Common questions about NOW Foods L-Theanine