Nutra Harmony
L-Theanine Extra Strength
82/100
SUPPIE SCORE
78/100
EFFICACY
High
SAFETY
80/100
CLEANLINESS
What Does L-Theanine Extra Strength Do?
400 mg L-Theanine is a high single dose relative to many 200 mg trials; evidence for focus and relaxation is moderate but dose-response data above 200 mg remains limited.
How does 400 mg L-Theanine compare to common studied doses for focus?
What evidence supports L-Theanine at this exact serving size?
Are there any known interactions with common medications?
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What Are the Benefits of L-Theanine Extra Strength?
Based on proven scientific research
FocusStrong
RelaxationStrong
Sleep qualityModerate
Good For:
What Are the Side Effects of Nutra Harmony L-Theanine Extra Strength?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•At 400 mg daily, mild headache or dizziness reported in some trials.
•May potentiate effects of sedatives or blood pressure medications.
•Limited long-term safety data beyond 8-12 weeks of continuous use.
•Insufficient evidence in pregnancy or lactation; avoid without medical advice.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Vegetable cellulose (capsule)
Low RiskRice flour
Low RiskMagnesium stearate. distributed by nutra harmony llc 312 w 2nd st
Low RiskOffice 5161
Low RiskCasper
Low RiskWy 82601 +1-855-505-0012 | @nutra_harmony *these statements have not been evaluated by the food
Low RiskDrug administration. this product is not intended to diagnose
Low RiskTreat
Low RiskCure
Low RiskOr prevent any disease. ir s s r su $1 add t add t
Low RiskMagnesium stearate
Low RiskWhat Are the Ingredients in Nutra Harmony L-Theanine Extra Strength?
L-Theanine
400 mg
Vegetable Cellulose (Capsule)
Rice Flour
Magnesium Stearate. DISTRIBUTED BY NUTRA HARMONY LLC 312 W 2ND ST
OFFICE 5161
CASPER
WY 82601 +1-855-505-0012 | @NUTRA_HARMONY *THESE STATEMENTS HAVE NOT BEEN EVALUATED BY THE FOOD
DRUG ADMINISTRATION. THIS PRODUCT IS NOT INTENDED TO DIAGNOSE
TREAT
CURE
OR PREVENT ANY DISEASE. Ir S S R Su $1 Add t Add t
Magnesium Stearate
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Dosage & Bioavailability
How the active doses and forms in L-Theanine Extra Strength compare to the research.
•L-Theanine — 400 mg; exceeds typical 200 mg studied doses in multiple trials for acute effects.
•L-Theanine — 400 mg; amino acid form shows rapid absorption with peak plasma levels in 30-60 minutes per pharmacokinetic studies.
•L-Theanine — 400 mg; the label does not disclose an extract standardisation percentage or marker amount.
Sources & References
No sources available
Frequently Asked Questions
Common questions about Nutra Harmony L-Theanine Extra Strength