BioStacks
Source Naturals
L-Theanine Powder
Powder · 205 Mg (Approximately 1 Level Scoop) · 100 servings · $0.10/serving
82 / 100Excellent
Best for
Score Breakdown
Formulation
82
Safety
100
Final score
82/100
Ingredients (1)
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
Other Ingredients
No other ingredients listed
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.