Various
L-Theanine
85/100
SUPPIE SCORE
85/100
EFFICACY
High
SAFETY
82/100
CLEANLINESS
What Does L-Theanine Do?
Strong evidence supports 200 mg L-Theanine for relaxation and sleep quality without grogginess. Doses align with research. Minimal safety concerns; stack with magnesium and glycine enhances benefits. No major red flags.
Is 200mg L-Theanine enough to improve sleep quality or should I take more?
Can I combine L-Theanine with magnesium and glycine every night without tolerance issues?
How long before bed should I take this stack for best results?
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What Are the Benefits of L-Theanine?
Based on proven scientific research
Sleep QualityStrong
RelaxationStrong
Anxiety ReductionModerate
Focus without SedationModerate
Good For:
What Are the Side Effects of Various L-Theanine?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Generally recognized as safe (GRAS) up to 250-400 mg daily
•May enhance effects of sedatives or blood pressure medications
•Safe for most adults; limited pregnancy safety data
•Avoid if allergic to green tea or coconut (softgel versions)
•Rare mild side effects: headache, dizziness at high doses
•No major known long-term safety concerns at recommended doses
Potential Side Effects
Negative Interactions
Inactive Ingredients
Good
Good
Low Risk
Low Risk
Low Risk
Good
Good
What Are the Ingredients in Various L-Theanine?
L-Theanine
200mg
Magnesium Glycinate
300-400mg
Glycine
3g
Hypromellose
Rice Flour
Stearic Acid
Silicon Dioxide
Magnesium Stearate
Microcrystalline Cellulose
Organic Coconut Oil
Sources & References
Sleep
Information from ingredientmd.com
Theanine l theanine
Information from www.webmd.com
L theanine 100 mg veg capsules
Information from www.nowfoods.com
S1043661819307790
Information from www.sciencedirect.com
L theanine
Information from www.healthline.com
L theanine
Information from integrativepro.com
Frequently Asked Questions
Common questions about Various L-Theanine