Suppie Logo - AI-Powered Supplement Scanner and Advisor App

Various - L-Theanine

Suppie Report

Various

L-Theanine

B grade
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?
Chat with Suppie

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

Hypromellose
Good
Rice flour
Good
Stearic acid
Low Risk
Silicon dioxide
Low Risk
Magnesium stearate
Low Risk
Microcrystalline cellulose
Good
Organic coconut oil
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

Frequently Asked Questions

Common questions about Various L-Theanine