Up&Up l-Theanine 100mg Capsules supplement bottle
Up&Up

l-Theanine 100mg Capsules Review

What We Researched
· 8 inactive ingredients decoded · 3 brand certifications checked · Last updated: Aug 2026
97
Product Score Excellent
76
Brand Score Fair

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

Product Analysis

Transparency Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • L-Theanine
  • Gelatin
  • Silicon Dioxide
  • Magnesium Stearate
  • Polyethylene Glycol Low
  • Acetic Acid
  • Sodium Lauryl Sulfate Low
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

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.

L-Theanine Unknown
Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Polyethylene Glycol Caution

It is used as a binder, coating agent, or to improve solubility.

Acetic Acid Unknown
Sodium Lauryl Sulfate Caution

It is used to help mix oil and water-based ingredients.

Brand Trust Report
Up&Up

Founded 2009 · Minneapolis, Minnesota, United States · 295 products · target.com/b/up-up/-/N-5v60y

Certifications

3 certifications
Nsf Gmp Verified Source
NSF Contents Certified Verified
Gluten-Free Certified Verified

Transparency

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

Violation History

6 incidents
Lawsuit Failure to disclose the presence of heavy metals in prenatal vitamins.2022Source
Lawsuit Failure to disclose the presence of heavy metals in prenatal vitamins.2022Source
Recall Up and Up Childrens Acetaminophen2021-10-26Source
Lawsuit Deceptively marketing biotin supplements with unsubstantiated health claims.2017Source
Lawsuit Falsely marketing the health benefits of biotin supplements.2017Source
Recall Up&Up Multipurpose Solution2010-12-22Source
Related Supplements
Sports Research L-Theanine 200 mg
Sports Research L-Theanine 200 mg
Product 100 Brand 100
Sports Research Double Strength L-Theanine 200 mg
Sports Research Double Strength L-Theanine 200 mg
Product 100 Brand 100
Nature's Way Valerian Root Sleep Aid
Nature's Way Valerian Root Sleep Aid
Product 100 Brand 100
Up&Up Vitamin D3 50 mcg
Up&Up Vitamin D3 50 mcg
Product 100 Brand 76
Up&Up Magnesium Citrate 250mg Softgels
Up&Up Magnesium Citrate 250mg Softgels
Product 100 Brand 76
Up&Up Magnesium Dietary Supplement Tablets
Up&Up Magnesium Dietary Supplement Tablets
Product 100 Brand 76
Frequently Asked Questions
Is Up&Up l-Theanine 100mg Capsules a good supplement?

Up&Up l-Theanine 100mg Capsules received a product quality score of 97/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. Of the 8 inactive ingredients, 4 are rated safe and 2 are flagged for review. The manufacturer, Up&Up, holds a brand trust score of 76/100 with 3 verified certifications including Nsf Gmp, NSF Contents Certified, Gluten-Free Certified.

Is Up&Up l-Theanine 100mg Capsules safe to take?

Up&Up l-Theanine 100mg Capsules has been analyzed for ingredient safety across all its components. Of 8 inactive ingredients, 4 are rated safe. 2 ingredients are flagged for review: Polyethylene Glycol, Sodium Lauryl Sulfate. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Up&Up a trustworthy supplement brand?

Up&Up receives a brand trust score of 76/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2009 and headquartered in Minneapolis, Minnesota, United States, the company offers 295 products in their lineup. They hold 3 verified certifications including Nsf Gmp, NSF Contents Certified, Gluten-Free Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Up&Up has 6 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 — 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.