Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels supplement bottle
Irwin Naturals

Testosterone UP Strength & Size™, 60 Liquid Softgels

What We Researched
27 active ingredients analyzed · 12 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
84
Product Score Good
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 2 g 1%**
Vitamin C (as Ascorbic Acid) 50 mg 56%
Vitamin D3 (as Cholecalciferol) (2000 IU) 50 mcg 250%
Niacin (as Niacinamide) 15 mg 94%
Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg 294%
Folate (200 mcg folic acid) 340 mcg DFE 85%
Vitamin B12 (as Methylcobalamin) 25 mcg 1042%
Biotin 50 mcg 167%
Pantothenic Acid (as d-Calcium Pantothenate) 10 mg 200%
Iron (as Ferrous Bisglycinate) 4 mg 22%
Magnesium (as Magnesium Citrate) 100 mg 24%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as L-Selenomethionine) 50 mcg 91%
Copper (as Copper Citrate) 1 mg 111%
Fish Oil (18% Eicosapentaenoic Acid (EPA) 270 mg, 12% Docosahexaenoic Acid (DHA) 180 mg) 1500 mg
KSM-66® Ashwagandha extract (root) 300 mg
PrimaVie® Shilajit extract 250 mg
elevATP® Ancient Peat and Apple extract 75 mg
Boron (as Boron Chelate) 3 mg
Vitamin K2 (as Menaquinone-7, MK-7) 50 mcg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) 3 mg
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D3 (as Cholecalciferol) (2000 IU) Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate (200 mcg folic acid) Fair
  • Vitamin B12 (as Methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as d-Calcium Pantothenate) Good
  • Iron (as Ferrous Bisglycinate) Good
  • Magnesium (as Magnesium Citrate) Good
  • Zinc (as Zinc Citrate) Good
  • Selenium (as L-Selenomethionine) Good
  • Copper (as Copper Citrate) Good
  • Fish Oil (18% Eicosapentaenoic Acid (EPA) 270 mg, 12% Docosahexaenoic Acid (DHA) 180 mg) Good
  • KSM-66® Ashwagandha extract (root) Good
  • PrimaVie® Shilajit extract Good
  • elevATP® Ancient Peat and Apple extract Good
  • Boron (as Boron Chelate) Fair
  • Vitamin K2 (as Menaquinone-7, MK-7) Good
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) Good
Other Ingredients Very Good

Fillers & Additives

  • Gelatin
  • Purified Water
  • Glycerin
  • Beeswax
  • Caramel (Color)
  • Sunflower Lecithin
  • Dicalcium Phosphate
  • Maltodextrin
  • Titanium Dioxide (Color) Medium
  • Mannitol
  • Silicon Dioxide
  • St. john's bread (carob)(color) and Red cabbage extract (color)
Efficacy Good

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 50 mg Under-dosed
  • Vitamin D3 (as Cholecalciferol) (2000 IU) 50 mcg Effective
  • Niacin (as Niacinamide) 15 mg Effective
  • Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg Effective
  • Folate (200 mcg folic acid) 340 mcg DFE Under-dosed
  • Vitamin B12 (as Methylcobalamin) 25 mcg Effective
  • Biotin 50 mcg Effective
  • Pantothenic Acid (as d-Calcium Pantothenate) 10 mg Effective
  • Iron (as Ferrous Bisglycinate) 4 mg Under-dosed
  • Magnesium (as Magnesium Citrate) 100 mg Under-dosed
  • Zinc (as Zinc Citrate) 15 mg Effective
  • Selenium (as L-Selenomethionine) 50 mcg Effective
  • Copper (as Copper Citrate) 1 mg Effective
  • Fish Oil (18% Eicosapentaenoic Acid (EPA) 270 mg, 12% Docosahexaenoic Acid (DHA) 180 mg) 1500 mg Effective
  • KSM-66® Ashwagandha extract (root) 300 mg Effective
  • PrimaVie® Shilajit extract 250 mg Effective
  • elevATP® Ancient Peat and Apple extract 75 mg Under-dosed
  • Boron (as Boron Chelate) 3 mg Effective
  • Vitamin K2 (as Menaquinone-7, MK-7) 50 mcg Under-dosed
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) 3 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 30
Total Fat 2 g 2%**
Saturated Fat 0.5 g 3%**
Cholesterol 20 mg 6%
Total Carbohydrates 2 g 1%**
Protein 1 g
Vitamin C (as Ascorbic Acid) 50 mg 56%
Vitamin D3 (as Cholecalciferol) (2000 IU) 50 mcg 250%
Niacin (as Niacinamide) 15 mg 94%
Vitamin B6 (as Pyridoxine Hydrochloride) 5 mg 294%
Folate (200 mcg folic acid) 340 mcg DFE 85%
Vitamin B12 (as Methylcobalamin) 25 mcg 1042%
Biotin 50 mcg 167%
Pantothenic Acid (as d-Calcium Pantothenate) 10 mg 200%
Iron (as Ferrous Bisglycinate) 4 mg 22%
Magnesium (as Magnesium Citrate) 100 mg 24%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as L-Selenomethionine) 50 mcg 91%
Copper (as Copper Citrate) 1 mg 111%
Sodium 10 mg <1%
Fish Oil (18% Eicosapentaenoic Acid (EPA) 270 mg, 12% Docosahexaenoic Acid (DHA) 180 mg) 1500 mg
KSM-66® Ashwagandha extract (root) 300 mg
PrimaVie® Shilajit extract 250 mg
elevATP® Ancient Peat and Apple extract 75 mg
Boron (as Boron Chelate) 3 mg
Vitamin K2 (as Menaquinone-7, MK-7) 50 mcg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) 3 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Beeswax Safe

Used as a coating and to help form softgel capsules.

Caramel (Color) Generally_safe

It is used to add a brown color to the supplement.

Sunflower Lecithin Safe

Helps mix oil and water-based ingredients. Allergen-free alternative to soy lecithin.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Titanium Dioxide (Color) Caution

It is used to improve the appearance of the supplement.

Mannitol Generally_safe

It is used as a sweetener, filler, and flow agent.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

St. john's bread (carob)(color) and Red cabbage extract (color) Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$37$36$35$34$33 Mar 12 $35.00$35.00
iHerb
Vitacost

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

Brand Trust Report
Irwin Naturals

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

Certifications

1 certification
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

Violation History

2 incidents
Lawsuit Deceptively marketing products as 'natural' while they contain synthetic ingredients.2021Source
Prop 65 Lead2011-02-02Source
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Frequently Asked Questions
Is Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels a good supplement?

Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 27 active ingredients with 20 servings per container. Of the 12 inactive ingredients, 7 are rated safe and 1 are flagged for review. The manufacturer, Irwin Naturals, holds a brand trust score of 78/100 with 1 verified certifications including Nsf Gmp.

What are the ingredients in Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels?

Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels contains 27 active ingredients: Calories (30), Total Fat (2 g), Saturated Fat (0.5 g), Cholesterol (20 mg), Total Carbohydrates (2 g), Protein (1 g), and 21 more. Notable high-dose ingredients include Vitamin D3 at 250% DV, Vitamin B6 at 294% DV, Vitamin B12 at 1042% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels safe to take?

Irwin Naturals Testosterone UP Strength & Size™, 60 Liquid Softgels has been analyzed for ingredient safety across all its components. Of 12 inactive ingredients, 7 are rated safe. 1 ingredient is flagged for review: Titanium Dioxide (Color). '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 Irwin Naturals a trustworthy supplement brand?

Irwin Naturals receives a brand trust score of 78/100 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. They hold 1 verified certifications including Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. 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. 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.