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PrePrimal L-Theanine, 200 mg supplement bottle
PrePrimal

L-Theanine, 200 mg Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · Page generated: Sep 2026
100
Product Score Excellent
58
Brand Score Poor

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Theanine 200 mg *
Bioavailability Excellent

Absorption Rating

  • L-Theanine Good
Other Ingredients Excellent

Fillers & Additives

  • Gelatin Capsule
  • Rice Flour
  • Magnesium Stearate (Vegetable Source)
  • Microcrystalline Cellulose
  • Silica
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.

Gelatin Capsule Safe

It is used as a material for making capsules.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Magnesium Stearate (Vegetable Source) Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
PrePrimal

· Pleasant Grove, Utah, USA · 12 products · preprimal.com/

Transparency

2 claims
Third Party Testing Claim — Claimed Evidence available Evidence
In House Testing — Claimed Evidence available Evidence
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Frequently Asked Questions
Is PrePrimal L-Theanine, 200 mg a good supplement?

PrePrimal 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. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, PrePrimal, holds a brand trust score of 58/100.

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

PrePrimal 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 PrePrimal L-Theanine, 200 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for PrePrimal L-Theanine, 200 mg. All 5 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 PrePrimal a trustworthy supplement brand?

PrePrimal receives a brand trust score of 58/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. the company offers 12 products in their lineup.

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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 — read our methodology. 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.