L-Theanine, 150 mg, 90 Veggie Caps
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Theanine (Suntheanine®) | 150 mg | † |
Bioavailability Excellent
Absorption Rating
- L-Theanine (Suntheanine®) Good
Other Ingredients Excellent
Fillers & Additives
- Microcrystalline Cellulose
- Hypromellose (Vegetarian Capsule)
- Silicon Dioxide
Efficacy Excellent
Dosage Analysis
- L-Theanine (Suntheanine®) 150 mg Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| L-Theanine (Suntheanine®) | 150 mg | † |
Other Ingredients
Price Comparison
Price History
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Is Doctor's Best L-Theanine, 150 mg a good supplement?
Doctor's Best L-Theanine, 150 mg, 90 Veggie Caps received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Doctor's Best, holds a brand trust score of 61/100 with 1 verified certifications including Fda Gmp Inspections.
What are the ingredients in Doctor's Best L-Theanine, 150 mg?
Doctor's Best L-Theanine, 150 mg contains 1 active ingredients: L-Theanine (Suntheanine®) (150 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is Doctor's Best L-Theanine, 150 mg safe to take?
Doctor's Best L-Theanine, 150 mg, 90 Veggie Caps has been analyzed for ingredient safety across all its components. All 3 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.
Is Doctor's Best a trustworthy supplement brand?
Doctor's Best receives a brand trust score of 61/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1990 and headquartered in Tustin, California, USA, the company offers 186 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Doctor's Best has 1 historical regulatory incident on record, which are factored into the trust score.
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