NOW Foods
L-Theanine Double Strength 200 mg

88/100
SUPPIE SCORE
80/100
EFFICACY
High
SAFETY
92/100
CLEANLINESS
What Does L-Theanine Double Strength 200 mg Do?
This double-strength L-Theanine supplement at 200 mg with 100 mg Inositol offers good efficacy for stress reduction and relaxation, backed by multiple RCTs. Dosages align with effective ranges; overall safe for healthy adults with minimal risks.
What are the primary benefits of L-Theanine for stress and relaxation?
How does the addition of Inositol enhance the effects of L-Theanine?
What dosage of L-Theanine is typically recommended for cognitive support?
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What Are the Benefits of L-Theanine Double Strength 200 mg?
Based on proven scientific research
Stress ReductionStrong
Anxiety ReliefStrong
Improved Sleep QualityModerate
Cognitive FunctionModerate
Relaxation without DrowsinessStrong
Good For:
What Are the Side Effects of NOW Foods L-Theanine Double Strength 200 mg?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•L-Theanine at 200 mg and Inositol at 100 mg are within safe, evidence-based dosage limits for adults, with no reported adverse effects in clinical trials.
•Mild side effects like headache or sleepiness may occur rarely with L-Theanine; Inositol is generally well-tolerated at this dose.
•Potential interactions include increased drowsiness with sedatives, benzodiazepines, or blood pressure medications; consult a physician if on such drugs.
•Insufficient data on safety during pregnancy or breastfeeding; avoid use without medical advice.
•No allergens in this formulation; produced in a GMP facility, low risk of contamination.
•Suitable for short- and long-term use in healthy adults, but monitor for individual sensitivities.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Hypromellose (cellulose capsule)
Low RiskStearic acid (vegetable source)
Low RiskSilicon dioxide
Low RiskWhat Are the Ingredients in NOW Foods L-Theanine Double Strength 200 mg?
L-Theanine
200 mg
Inositol
100 mg
Hypromellose (cellulose capsule)
Stearic Acid (vegetable source)
Silicon Dioxide
Dosage & Bioavailability
How the active doses and forms in L-Theanine Double Strength 200 mg compare to the research.
•L-Theanine — 200 mg per serving; within the 200-400 mg/day used in studies.
•Inositol — 100 mg per serving; studies use 2,000-4,000 mg/day.
Sources & References
16930802
Information from pubmed.ncbi.nlm.nih.gov
Theanine
Information from www.webmd.com
Now l theanine double strength
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PMC5452299
Information from pmc.ncbi.nlm.nih.gov
Details
Information from www.webmd.com
PMC6457692
Information from pmc.ncbi.nlm.nih.gov
49551946
Information from www.walmart.com
39633316
Information from pubmed.ncbi.nlm.nih.gov
31412272
Information from pubmed.ncbi.nlm.nih.gov
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Information from pubmed.ncbi.nlm.nih.gov
Health benefits inositol
Information from www.webmd.com
31623400
Information from pubmed.ncbi.nlm.nih.gov
41176609
Information from pubmed.ncbi.nlm.nih.gov
1000001983
Information from www.pureformulas.com
PMC11616108
Information from pmc.ncbi.nlm.nih.gov
Details
Information from www.webmd.com
PMC6617769
Information from pmc.ncbi.nlm.nih.gov
54096
Information from www.iherb.com
0073373900148
Information from www.fredmeyer.com
Now foods double strength l theanine 200 mg 120 veg caps
Information from www.swansonvitamins.com
B00GQV9YX6
Information from www.amazon.com
31758301
Information from pubmed.ncbi.nlm.nih.gov
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Information from pubmed.ncbi.nlm.nih.gov
L theanine 200 mg double strength by now foods
Information from www.nhc.com
Theanine
Information from pubchem.ncbi.nlm.nih.gov
0073373900147
Information from www.kroger.com
Theanine uses and risks
Information from www.webmd.com
Inositol
Information from www.webmd.com
PMC10179891
Information from pmc.ncbi.nlm.nih.gov
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Information from pubmed.ncbi.nlm.nih.gov
Theanine
Information from examine.com
L theanine double strength 200 mg veg capsules
Information from www.nowfoods.com
B0BTRYDKLV
Information from www.amazon.com
38758503
Information from pubmed.ncbi.nlm.nih.gov
26192072
Information from pubmed.ncbi.nlm.nih.gov
N8 11371
Information from www.vitaminshoppe.com
PMC11263523
Information from pmc.ncbi.nlm.nih.gov
L theanine double strength 200 mg veg capsules
Information from www.nowfoods.com
Frequently Asked Questions
Common questions about NOW Foods L-Theanine Double Strength 200 mg