NOW
L-Theanine
Non-Nutrient/Non-Botanical93 servings
The dose here lands inside the range studies actually used.
Dose At dose vs. studied dose
- Vegan
- Vegetarian
- Gluten Free
- Dairy Free
How it scores
Overall
C
Evidence
C
Dose
A
Formulation
A
What's in it, judged
Supplement Facts
Serving Size: 0.125 tsp (approx. 0.3 g)
93 per container
- L-Theanine 285 mg †
† Daily Value not established
Other ingredients: None.
Suggested Usage: Take 1/8 level teaspoon daily in juice or water, preferably on an empty stomach. Do not exceed recommended dose.
Reported interactions
- Interacts with:
- Doxorubicin ·Morphine ·Capecitabine ·Oxaliplatin ·Nicotine ·Tetrahydrocannabinol ·Mecamylamine
- Side effects:
- Fatigue ·Headache ·Nausea ·Dizziness ·Dysgeusia ·Anxiety
From research databases. Not medical advice — talk to your physician.
Is it dosed to do anything?
-
L-Theanine
At the studied dose285 mg / day studies used 50-400 mg · 22 studies
What L-Theanine is good for
- Heart rate responseD
Heart rate response to stress or stimulants
Cardiovascular
- Same-day systolic BPD
Lower same-day systolic pressure
Cardiovascular
- Anxiety symptomsC
Fewer anxiety symptoms
Mood & depression
- CortisolC
Lower cortisol levels
Endocrine & hormonal
- Depression severityC
Less severe depression
Mood & depression
