L-Theanine Review
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Theanine | 200 mg | * |
Bioavailability Excellent
Absorption Rating
- L-Theanine Good
Other Ingredients Excellent
Fillers & Additives
- Cellulose
- Rice Concentrate
- Rice Bran
- Water
Efficacy Excellent
Dosage Analysis
- L-Theanine 200 mg Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| L-Theanine | 200 mg | * |
Other Ingredients
Certifications
3 certifications
Is Premier Research Labs L-Theanine a good supplement?
Premier Research Labs L-Theanine 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 with 60 servings per container. All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Premier Research Labs, holds a brand trust score of 72/100.
What are the ingredients in Premier Research Labs L-Theanine?
Premier Research Labs L-Theanine contains 1 active ingredients: L-Theanine (200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is Premier Research Labs L-Theanine safe to take?
GoodSupp reviewed the inactive-ingredient data available for Premier Research Labs L-Theanine. All 4 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.
Is Premier Research Labs a trustworthy supplement brand?
Premier Research Labs receives a brand trust score of 72/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. the company offers 29 products in their lineup.
Scan Any Supplement Instantly
Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.