Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow, 150 Liquid Soft-Gels supplement bottle
Irwin Naturals

Steel-Libido Red®, Magnum Blood-Flow, 150 Liquid Soft-Gels

What We Researched
16 active ingredients analyzed · 8 inactive ingredients decoded · 1 brand certification checked · 3 retailers compared · Last updated: Mar 2026
69
Product Score Fair
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%**
L-Citrulline 1500 mg
Medium Chain Triglyceride (MCT) oil 1000 mg
Pumpkin Oil (seed) 1000 mg
Velvet Bean (Mucuna pruriens) extract (seed) 400 mg
Ginkgo (Ginkgo biloba) extract (leaf) 120 mg
L-Theanine 100 mg
Theobromine 92 mg
Asian Ginseng (Panax ginseng)extract (root) 80 mg
Cayenne powder (30,000 HU)(fruit) 60 mg
Superoxide Dismutase (400 units) 50 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), ginger extract (5% gingerols)(rhizome) 6 mg
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • L-Citrulline Good
  • Medium Chain Triglyceride (MCT) oil Good
  • Pumpkin Oil (seed) Good
  • Velvet Bean (Mucuna pruriens) extract (seed) Fair
  • Ginkgo (Ginkgo biloba) extract (leaf) Poor
  • L-Theanine Good
  • Theobromine Good
  • Asian Ginseng (Panax ginseng)extract (root) Good
  • Cayenne powder (30,000 HU)(fruit) Fair
  • Superoxide Dismutase (400 units) Fair
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), ginger extract (5% gingerols)(rhizome) Good
Other Ingredients Good

Fillers & Additives

  • Gelatin
  • Purified Water
  • Glycerin
  • Annatto (Color)
  • Beeswax
  • Sunflower Lecithin
  • Silicon Dioxide
  • Titanium dioxide (color) and Maltodextrin High
Efficacy Fair

Dosage Analysis

  • L-Citrulline 1500 mg Under-dosed
  • Medium Chain Triglyceride (MCT) oil 1000 mg Under-dosed
  • Pumpkin Oil (seed) 1000 mg Effective
  • Velvet Bean (Mucuna pruriens) extract (seed) 400 mg Effective
  • Ginkgo (Ginkgo biloba) extract (leaf) 120 mg Effective
  • L-Theanine 100 mg Effective
  • Theobromine 92 mg Under-dosed
  • Asian Ginseng (Panax ginseng)extract (root) 80 mg Under-dosed
  • Cayenne powder (30,000 HU)(fruit) 60 mg High
  • Superoxide Dismutase (400 units) 50 mg Under-dosed
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), ginger extract (5% gingerols)(rhizome) 6 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 40
Total Fat 2 g 3%**
Saturated Fat 1.5 g 8%**
Total Carbohydrates 1 g <1%**
Protein 4 g
L-Citrulline 1500 mg
Medium Chain Triglyceride (MCT) oil 1000 mg
Pumpkin Oil (seed) 1000 mg
Velvet Bean (Mucuna pruriens) extract (seed) 400 mg
Ginkgo (Ginkgo biloba) extract (leaf) 120 mg
L-Theanine 100 mg
Theobromine 92 mg
Asian Ginseng (Panax ginseng)extract (root) 80 mg
Cayenne powder (30,000 HU)(fruit) 60 mg
Superoxide Dismutase (400 units) 50 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), ginger extract (5% gingerols)(rhizome) 6 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.

Annatto (Color) Generally_safe

It is used as a natural food coloring to provide a yellow or orange hue.

Beeswax Safe

Used as a coating and to help form softgel capsules.

Sunflower Lecithin Safe

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

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Titanium dioxide (color) and Maltodextrin Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$53$50$48$45$43 Mar 12 $51.00$44.99
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
Related Supplements
Frequently Asked Questions
Is Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow a good supplement?

Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow, 150 Liquid Soft-Gels received a product quality score of 69/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 16 active ingredients with 37 servings per container. Of the 8 inactive ingredients, 6 are rated safe and 0 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 Steel-Libido Red®, Magnum Blood-Flow?

Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow contains 16 active ingredients: Calories (40), Total Fat (2 g), Saturated Fat (1.5 g), Total Carbohydrates (1 g), Protein (4 g), L-Citrulline (1500 mg), and 10 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow safe to take?

Irwin Naturals Steel-Libido Red®, Magnum Blood-Flow, 150 Liquid Soft-Gels 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 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.