L-Theanine Review
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Theanine | 100 mg | — |
Bioavailability Excellent
Absorption Rating
- L-Theanine Good
Other Ingredients Excellent
Fillers & Additives
- Gelatin
- Hypromellose
- Magnesium Stearate
- Silica
Efficacy Excellent
Dosage Analysis
- L-Theanine 100 mg Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| L-Theanine | 100 mg |
Other Ingredients
Certifications
3 certifications
Transparency
2 claims
Violation History
1 incident
Is Spring Valley L-Theanine a good supplement?
Spring Valley 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 100 servings per container. All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Spring Valley, holds a brand trust score of 58/100 with 3 verified certifications including IGEN Non-GMO Tested, USDA Organic, Non-GMO Project Verified.
What are the ingredients in Spring Valley L-Theanine?
Spring Valley L-Theanine contains 1 active ingredients: L-Theanine (100 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is Spring Valley L-Theanine safe to take?
Spring Valley L-Theanine has been analyzed for ingredient safety across all its components. All 4 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 Spring Valley a trustworthy supplement brand?
Spring Valley receives a brand trust score of 58/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. the company offers 541 products in their lineup. They hold 3 verified certifications including IGEN Non-GMO Tested, USDA Organic, Non-GMO Project Verified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Spring Valley has 1 historical regulatory incident on record, which are factored into the trust score.
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