NOW Foods L-Theanine, 90 Veg Capsules supplement bottle
NOW Foods

L-Theanine, 90 Veg Capsules

What We Researched
2 active ingredients analyzed · 3 inactive ingredients decoded · 7 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
93
Product Score Excellent
100
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Theanine 100 mg **
Decaffeinated Green Tea (Camellia sinensis) (Leaf) 250 mg **
Bioavailability Very Good

Absorption Rating

  • L-Theanine Good
  • Decaffeinated Green Tea (Camellia sinensis) (Leaf) Fair
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Cellulose Capsule)
  • Rice Flour
  • Stearic Acid (Vegetable Source) and Silicon Dioxide
Efficacy Excellent

Dosage Analysis

  • L-Theanine 100 mg Effective
  • Decaffeinated Green Tea (Camellia sinensis) (Leaf) 250 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Theanine 100 mg **
Decaffeinated Green Tea (Camellia sinensis) (Leaf) 250 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Cellulose Capsule) Safe

It is used as a material for making vegetarian capsules.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Stearic Acid (Vegetable Source) and Silicon Dioxide Generally_safe

They are used to improve the flow and processing of the supplement.

Price Comparison

iHerb $13.46
Best Price
Target $16.99

Price History

Tracked across major retailers. Updated periodically.

$15$14$13$12$11 Mar 12 $13.46
iHerb

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

Brand Trust Report
NOW Foods

Founded 1968 · Bloomingdale, Illinois, USA · 996 products · nowfoods.com

Certifications

7 certifications
Consumerlab Verified Source
Informed Sport Verified Source
Labdoor Verified Source
Non Gmo Project Verified Source
Npa Gmp Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

7 incidents
Lawsuit Mislabeled St. John's Wort supplement, containing significantly less of the active ingredient than advertised.NoneSource
Lawsuit A data breach that compromised personal and health information of employees and dependents.2023Source
Prop 65 Lead2021-11-30Source
Recall NOW Real Food® Raw Macadamia Nuts2020-06-12Source
Recall NOW Real Food® Zesty Sprouting Mix2018-06-21Source
Lawsuit Misleadingly using slack-fill packaging for their Vitamin C supplements.2015Source
Fda Warning Adulterated Dietary Supplement due to pesticide (quintozene) contamination in American Ginseng.2007-10-12Source
Related Supplements
NOW Foods L-Theanine Pure Powder, 1 oz (28 g)
NOW Foods L-Theanine Pure Powder, 1 oz (28 g)
Product 100 Brand 100
Nordic Naturals Nordic Naturals Baby's Vitamin D3 - Healthy Bones, Immune System Support, Normal Sleep Rhythms - 22.5 mL
Nordic Naturals Nordic Naturals Baby's Vitamin D3 - Healthy Bones, Immune System Support, Normal Sleep Rhythms - 22.5 mL
Product 100 Brand 98
XYMOGEN L-Theanine, 60 Vegetarian Capsules
XYMOGEN L-Theanine, 60 Vegetarian Capsules
Product 100 Brand 96
NOW Foods Vitamin D3, 1000 IU
NOW Foods Vitamin D3, 1000 IU
Product 100 Brand 100
NOW Foods Chromium Picolinate, 200 mcg
NOW Foods Chromium Picolinate, 200 mcg
Product 100 Brand 100
NOW Foods NOW Foods Ashwagandha Extract 450 mg 180 Capsule
NOW Foods NOW Foods Ashwagandha Extract 450 mg 180 Capsule
Product 100 Brand 100
Frequently Asked Questions
Is NOW Foods L-Theanine, 90 Veg Capsules a good supplement?

NOW Foods L-Theanine, 90 Veg Capsules received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 2 active ingredients Of the 3 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, NOW Foods, holds a brand trust score of 100/100 with 7 verified certifications including Consumerlab, Informed Sport, Labdoor, Non Gmo Project.

What are the ingredients in NOW Foods L-Theanine, 90 Veg Capsules?

NOW Foods L-Theanine, 90 Veg Capsules contains 2 active ingredients: L-Theanine (100 mg), Decaffeinated Green Tea (Camellia sinensis) (Leaf) (250 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW Foods L-Theanine, 90 Veg Capsules safe to take?

NOW Foods L-Theanine, 90 Veg Capsules 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 NOW Foods a trustworthy supplement brand?

NOW Foods receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 996 products in their lineup. They hold 7 verified certifications including Consumerlab, Informed Sport, Labdoor, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: NOW Foods has 7 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Download on App Store Browse All Supplements
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.