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Micro Ingredients L-Theanine supplement bottle
Micro Ingredients

L-Theanine Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 2 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
86
Brand Score Good

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 400 mg —
Bioavailability Excellent

Absorption Rating

  • L-Theanine Good
Other Ingredients Excellent

Fillers & Additives

  • Coconut Oil
  • Gelatin
  • Zinc Oxide
  • Glycerin
  • Purified Water
Efficacy Excellent

Dosage Analysis

  • L-Theanine 400 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Theanine 400 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Coconut Oil Safe

Helps dissolve and absorb fat-soluble vitamins.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Zinc Oxide Generally_safe

It is used as a source of zinc.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Brand Trust Report
Micro Ingredients

Founded 2015 · Montclair, CA; Diamond Bar, CA; Miami, FL · 100 products · microingredients.com

Certifications

2 certifications
Labdoor Source available Primary evidence
USDA Organic Supporting evidence unavailable

Transparency

4 claims
Third Party Testing Claim — Claimed Evidence available Evidence
Coa Availability — Claimed Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

3 incidents
Lawsuit Other Fraud2025 Source unavailable
Prop 65 Lead2022-05-26 Source available Primary source
Prop 65 Lead2020-11-02 Source available Primary source
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Frequently Asked Questions
Is Micro Ingredients L-Theanine a good supplement?

Micro Ingredients 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 200 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Micro Ingredients, holds a brand trust score of 86/100.

What are the ingredients in Micro Ingredients L-Theanine?

Micro Ingredients L-Theanine contains 1 active ingredients: L-Theanine (400 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Micro Ingredients L-Theanine safe to take?

GoodSupp reviewed the inactive-ingredient data available for Micro Ingredients L-Theanine. 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 Micro Ingredients a trustworthy supplement brand?

Micro Ingredients receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2015 and headquartered in Montclair, CA; Diamond Bar, CA; Miami, FL, the company offers 100 products in their lineup. Note: Micro Ingredients has 3 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 — 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.