Nutricost
Nutricost L-Theanine 200mg
86/100
SUPPIE SCORE
80/100
EFFICACY
High
SAFETY
88/100
CLEANLINESS
What Does Nutricost L-Theanine 200mg Do?
Nutricost L-Theanine 200mg offers a solid dosage aligned with research for stress reduction and relaxation benefits, backed by multiple RCTs. The product is very safe with minimal side effects and low-risk excipients, ideal for daily use in healthy adults.
What are the main benefits of L-Theanine for stress and anxiety relief?
How does L-Theanine interact with caffeine to improve focus?
Is L-Theanine safe for daily use in healthy adults?
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What Are the Benefits of Nutricost L-Theanine 200mg?
Based on proven scientific research
Stress ReductionStrong
Anxiety ReliefStrong
Improved SleepModerate
Enhanced FocusModerate
Cognitive SupportMild
Good For:
What Are the Side Effects of Nutricost Nutricost L-Theanine 200mg?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•L-Theanine at 200mg daily is well within safe limits (up to 1200mg/day studied), with GRAS status and no significant side effects in healthy adults.
•Potential mild interactions with sedatives or sleep aids like benzodiazepines, enhancing drowsiness; consult physician if on CNS depressants.
•Safe for most populations, but insufficient data for pregnancy/breastfeeding—avoid or consult healthcare provider; suitable for elderly but monitor in children.
•Gelatin capsule may pose allergen risk for those with bovine sensitivities; no gluten, GMO, or major contaminants reported in GMP facility.
•Long-term use up to 8 weeks shows no adverse effects; rice flour filler safe but monitor for rare digestive upset in sensitive individuals.
•No contraindications for common conditions, but those with low blood pressure should monitor as L-Theanine may mildly lower it.
Potential Side Effects
Negative Interactions
Allergens
Gelatin (bovine source)
Inactive Ingredients
Gelatin capsule
Low RiskRice flour
Low RiskMagnesium stearate
Low RiskMicrocrystalline cellulose
Low RiskSilica
Low RiskWhat Are the Ingredients in Nutricost Nutricost L-Theanine 200mg?
L-Theanine
200mg
Gelatin capsule
Rice flour
Magnesium stearate
Microcrystalline cellulose
Silica
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Dosage & Bioavailability
How the active doses and forms in Nutricost L-Theanine 200mg compare to the research.
•L-Theanine — 200 mg per serving; within the 200-400 mg/day used in studies.
Sources & References
Microcrystalline cellulose mcc unsafe
Information from biophysicsessentialsofficial.com
Theanine
Information from examine.com
PMC11616108
Information from pmc.ncbi.nlm.nih.gov
The great magnesium stearate debate clearing up the misconceptions
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Are your supplements safe to consume watch out for these common fillers
Information from www.nongmoproject.org
V040je03.htm
Information from www.inchem.org
PMC8475422
Information from pmc.ncbi.nlm.nih.gov
B0731JC54K
Information from www.amazon.com
Nutricost l theanine powder 100 grams
Information from nutricost.com
PMC6836118
Information from pmc.ncbi.nlm.nih.gov
140218
Information from www.iherb.com
L theanine.html
Information from www.drugs.com
Nutricost l theanine 200mg capsules
Information from nutricost.com
PMC10179891
Information from pmc.ncbi.nlm.nih.gov
Magnesium stearate toxicity
Information from www.consumerlab.com
Is rice flour in supplements bad for you nutraseller
Information from nutraseller.com
140230
Information from www.iherb.com
Nutricost theanine
Information from nutricost.com
38758503
Information from pubmed.ncbi.nlm.nih.gov
L theanine.html
Information from www.drugs.com
25759004
Information from pubmed.ncbi.nlm.nih.gov
Rice flour
Information from www.digicomply.com
Nutricost l theanine
Information from www.vitacost.com
140230
Information from www.iherb.com
31412272
Information from pubmed.ncbi.nlm.nih.gov
Nutricost l theanine 200 mg 120 capsules
Information from www.vitacost.com
Is rice flour in supplements safe what you need to know
Information from www.suziethefoodie.com
B01B3RWQNM
Information from www.amazon.com
PMC5655391
Information from pmc.ncbi.nlm.nih.gov
27396868
Information from pubmed.ncbi.nlm.nih.gov
Theanine uses and risks
Information from www.webmd.com
PMC8384717
Information from pmc.ncbi.nlm.nih.gov
PMC11263523
Information from pmc.ncbi.nlm.nih.gov
Theanine
Information from www.webmd.com
Frequently Asked Questions
Common questions about Nutricost Nutricost L-Theanine 200mg