BioStacks
Swanson

Suntheanine® L-Theanine, 200 mg

1 Capsule · 60 servings · $0.38/serving

71 / 100Good

Score Breakdown

Formulation
82
Safety
87
Final score
71/100

Ingredients (1)

Suntheanine® L-Theanine200 mg

Optimal dose · Premium form

Other Ingredients

Fillers, coatings, and additives

3Safe1Caution

Rice FlourFiller

Caution

Magnesium StearateLubricant

Safe

Silicon DioxideAnti-caking

Safe

HypromelloseCapsule

Safe

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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.