Products

Label data from official national databases and brand websites, as declared; not lab-verified.

Ingredient

Min (mg)

Max

Country

Dosage form

Source

Brand	Product	Per day	Country	Source
PhysioLogics	L-Theanine 100 mg	100 mg	United States	US NIH DSLD
Douglas Laboratories	L-Theanine	100 mg	United States	US NIH DSLD
Ortho Molecular Products	L-Theanine	400 mg	United States	US NIH DSLD
Approved Science	GABA + L-Theanine & L-Arginine	400 mg	United States	US NIH DSLD
Nature Made	Melatonin 3 mg With L-Theanine	200 mg	United States	US NIH DSLD
Source Naturals Serene Science	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
Puritan's Pride	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
Source Naturals	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
Source Naturals	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
SuperiorLabs	5-HTP WORx	100 mg	United States	US NIH DSLD
Protocol for Life Balance	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
Best Naturals	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
Longevity Medical Clinic	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
aSquared Nutrition	Apigenin 50 mg with L-Theanine	200 mg	United States	US NIH DSLD
Health Thru Nutrition	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
BRI Nutrition	L-Theanine Extra Strength	400 mg	United States	US NIH DSLD
Double Wood Supplements	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
NOW	Chewable L-Theanine 100 mg	300 mg	United States	US NIH DSLD
The Vitamin Shoppe	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
Swanson Ultra	GABAplex With L-Tyrosine & L-Theanine	100 mg	United States	US NIH DSLD
The Vitamin Shoppe	L-Theanine 100 mg	300 mg	United States	US NIH DSLD
Meijer	L-Theanine 100 mg	300 mg	United States	US NIH DSLD
The Vitamin Shoppe	L-Theanine 100 mg	300 mg	United States	US NIH DSLD
The Vitamin Shoppe	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
Source Naturals Serene Science	L-Theanine 200 mg	400 mg	United States	US NIH DSLD
The Vitamin Shoppe	L-Theanine 100 mg	100 mg	United States	US NIH DSLD
Vitamin World	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
Puritan's Pride	L-Theanine 200 mg	200 mg	United States	US NIH DSLD
California Gold Nutrition	L-Theanine 100 mg	100 mg	United States	US NIH DSLD
AN Amazing Nutrition Amazing Formulas	L-Theanine 200 mg	200 mg	United States	US NIH DSLD

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For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.