Best Naturals L-Theanine, 200 mg supplement bottle
Best Naturals

L-Theanine, 200 mg

What We Researched
1 active ingredient analyzed · 7 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
67
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Theanine 200 mg —
Bioavailability Excellent

Absorption Rating

  • L-Theanine Good
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Microcrystalline cellulose (vegetable grade)
  • Stearic Acid
  • Croscarmellose Sodium
  • Silicon Dioxide
  • Magnesium Stearate
  • Pharmaceutical Glaze
Efficacy Excellent

Dosage Analysis

  • L-Theanine 200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Theanine 200 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Microcrystalline cellulose (vegetable grade) Unknown
Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Pharmaceutical Glaze Generally_safe

It is used to coat tablets or capsules for easier swallowing or controlled release.

Price Comparison

Target $18.98 $0.16 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$21$20$19$18$17 $18.98
Target

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Best Naturals

Founded 2012 · Piscataway, New Jersey, USA · 129 products · shopbestnaturals.com

Certifications

1 certification
Consumerlab Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

2 incidents
Prop 65 Lead and lead compounds2021-12-29Source
Lawsuit Falsely advertising krill oil supplements that allegedly contain no krill.2021Source
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Frequently Asked Questions
Is Best Naturals L-Theanine, 200 mg a good supplement?

Best Naturals L-Theanine, 200 mg 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 120 servings per container. Of the 7 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Best Naturals, holds a brand trust score of 67/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Best Naturals L-Theanine, 200 mg?

Best Naturals L-Theanine, 200 mg 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 Best Naturals L-Theanine, 200 mg safe to take?

Best Naturals L-Theanine, 200 mg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Best Naturals a trustworthy supplement brand?

Best Naturals receives a brand trust score of 67/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2012 and headquartered in Piscataway, New Jersey, USA, the company offers 129 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Best Naturals has 2 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.