Irwin Naturals Testosterone UP RED supplement bottle
Irwin Naturals

Testosterone UP RED Review

What We Researched
11 active ingredients analyzed · 9 inactive ingredients decoded · 2 brand certifications checked · Page generated: Sep 2026
63
Product Score Fair
79
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
Medium Chain Triglyceride Oil 2400 mg †
L-Citrulline 1500 mg †
Fenugreek Seed Extract 200 mg †
Tribulus Fruit Extract 200 mg †
Beta-Sitosterol 150 mg †
Ginkgo leaf extract (as Flavone Glycosides, Terpene Lactones) 120 mg †
Beet, Powder 100 mg †
LJ100 Tongkat Ali (Eurycoma longifolia) extract (as Eurypeptides, Glycosaponins) 100 mg †
Cayenne powder 60 mg †
Asian Ginseng extract (as Ginsenosides) 30 mg †
BioPerine Complex 6 mg †
Bioavailability Very Good

Absorption Rating

  • Medium Chain Triglyceride Oil Good
  • L-Citrulline Good
  • Fenugreek Seed Extract Fair
  • Tribulus Fruit Extract Good
  • Beta-Sitosterol Good
  • Ginkgo leaf extract (as Flavone Glycosides, Terpene Lactones) Poor
  • Beet, Powder Fair
  • LJ100 Tongkat Ali (Eurycoma longifolia) extract (as Eurypeptides, Glycosaponins) Good
  • Asian Ginseng extract (as Ginsenosides) Good
  • BioPerine Complex Good
Other Ingredients Good

Fillers & Additives

  • Gelatin
  • Water
  • Glycerin
  • Annatto
  • Soy Lecithin
  • Beeswax
  • Silicon Dioxide
  • Titanium Dioxide High
  • Maltodextrin
Efficacy Poor

Dosage Analysis

  • Medium Chain Triglyceride Oil 2400 mg Under-dosed
  • L-Citrulline 1500 mg Under-dosed
  • Tribulus Fruit Extract 200 mg Under-dosed
  • Beta-Sitosterol 150 mg Under-dosed
  • Ginkgo leaf extract (as Flavone Glycosides, Terpene Lactones) 120 mg Effective
  • Beet, Powder 100 mg Under-dosed
  • LJ100 Tongkat Ali (Eurycoma longifolia) extract (as Eurypeptides, Glycosaponins) 100 mg Under-dosed
  • Asian Ginseng extract (as Ginsenosides) 30 mg Under-dosed
  • BioPerine Complex 6 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Medium Chain Triglyceride Oil 2400 mg †
L-Citrulline 1500 mg †
Fenugreek Seed Extract 200 mg †
Tribulus Fruit Extract 200 mg †
Beta-Sitosterol 150 mg †
Ginkgo leaf extract (as Flavone Glycosides, Terpene Lactones) 120 mg †
Beet, Powder 100 mg †
LJ100 Tongkat Ali (Eurycoma longifolia) extract (as Eurypeptides, Glycosaponins) 100 mg †
Cayenne powder 60 mg †
Asian Ginseng extract (as Ginsenosides) 30 mg †
BioPerine Complex 6 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Water Safe

Dissolves and carries water-soluble ingredients.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Annatto Safe

Provides natural color to supplements.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Beeswax Safe

Used as a coating and to help form softgel capsules.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Brand Trust Report
Irwin Naturals

Founded 1994 · Los Angeles, California, United States · 130 products · irwinnaturals.com/

Certifications

2 certifications
Nsf Gmp Source available Primary evidence
NSF Contents Certified Supporting evidence unavailable

Transparency

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

Violation History

2 incidents
Lawsuit Deceptively marketing products as 'natural' while they contain synthetic ingredients.2021 Source available Primary source
Prop 65 Lead2011-02-02 Source available Primary source
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Frequently Asked Questions
Is Irwin Naturals Testosterone UP RED a good supplement?

Irwin Naturals Testosterone UP RED received a product quality score of 63/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 11 active ingredients with 30 servings per container. Of the 9 inactive ingredients, 8 are rated safe and 1 ingredient is flagged for review. The manufacturer, Irwin Naturals, holds a brand trust score of 79/100.

What are the ingredients in Irwin Naturals Testosterone UP RED?

Irwin Naturals Testosterone UP RED contains 11 active ingredients: Medium Chain Triglyceride Oil (2400 mg), L-Citrulline (1500 mg), Fenugreek Seed Extract (200 mg), Tribulus Fruit Extract (200 mg), Beta-Sitosterol (150 mg), Ginkgo leaf extract (as Flavone Glycosides, Terpene Lactones) (120 mg), and 5 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals Testosterone UP RED safe to take?

GoodSupp reviewed the inactive-ingredient data available for Irwin Naturals Testosterone UP RED. Of 9 inactive ingredients, 8 are rated safe. 1 ingredient is flagged for review: Titanium Dioxide. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. 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 Irwin Naturals a trustworthy supplement brand?

Irwin Naturals receives a brand trust score of 79/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1994 and headquartered in Los Angeles, California, United States, the company offers 130 products in their lineup. Note: Irwin Naturals has 2 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.