Advance Physician Formulas L-Theanine, 200 mg supplement bottle
Advance Physician Formulas

L-Theanine, 200 mg Review

What We Researched
1 active ingredient analyzed · 1 inactive ingredient decoded · 2 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
64
Brand Score Fair

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

  • Rice flour and modified cellulose (hypromellose vegetable capsule)
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.

Rice flour and modified cellulose (hypromellose vegetable capsule) Unknown
Brand Trust Report
Advance Physician Formulas

Founded 1997 · Irvine, California, USA · 24 products · physicianformulas.com/

Certifications

2 certifications
Fda Gmp Inspections Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency

1 claim
Third Party Testing Claim — Claimed Evidence available Evidence
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Frequently Asked Questions
Is Advance Physician Formulas L-Theanine, 200 mg a good supplement?

Advance Physician Formulas 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 Of the 1 inactive ingredients, 0 are rated safe and 0 ingredients are flagged for review. The manufacturer, Advance Physician Formulas, holds a brand trust score of 64/100.

What are the ingredients in Advance Physician Formulas L-Theanine, 200 mg?

Advance Physician Formulas 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 Advance Physician Formulas L-Theanine, 200 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for Advance Physician Formulas L-Theanine, 200 mg. 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 Advance Physician Formulas a trustworthy supplement brand?

Advance Physician Formulas receives a brand trust score of 64/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1997 and headquartered in Irvine, California, USA, the company offers 24 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.