Irwin Naturals L-Citrulline + L-Arginine, Booster for Men, 60 Liquid Soft-Gels supplement bottle
Irwin Naturals

L-Citrulline + L-Arginine, Booster for Men, 60 Liquid Soft-Gels

What We Researched
10 active ingredients analyzed · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
64
Product Score Fair
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid) 100 mg 111%
Flaxseed Oil (50% Alpha linoleic Acid (ALA), 825 mg) (seed) 1,650 mg
L-Citrulline 750 mg
Horny Goat Weed (Epimedium sagittatum) extract (4:1) (aerial) 375 mg
L-Arginine (as L-Arginine Hydrochloride) 150 mg
AQTIV™ Beet powder (root) 100 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) 3 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
  • Flaxseed Oil (50% Alpha linoleic Acid (ALA), 825 mg) (seed) Good
  • L-Citrulline Good
  • Horny Goat Weed (Epimedium sagittatum) extract (4:1) (aerial) Fair
  • L-Arginine (as L-Arginine Hydrochloride) Good
  • AQTIV™ Beet powder (root) Fair
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) Good
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Poor

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 100 mg Effective
  • Flaxseed Oil (50% Alpha linoleic Acid (ALA), 825 mg) (seed) 1,650 mg Effective
  • L-Citrulline 750 mg Under-dosed
  • Horny Goat Weed (Epimedium sagittatum) extract (4:1) (aerial) 375 mg Under-dosed
  • L-Arginine (as L-Arginine Hydrochloride) 150 mg Under-dosed
  • AQTIV™ Beet powder (root) 100 mg 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 35
Total Fat 2.5 g 3%**
Protein 3 g
Vitamin C (as Ascorbic Acid) 100 mg 111%
Flaxseed Oil (50% Alpha linoleic Acid (ALA), 825 mg) (seed) 1,650 mg
L-Citrulline 750 mg
Horny Goat Weed (Epimedium sagittatum) extract (4:1) (aerial) 375 mg
L-Arginine (as L-Arginine Hydrochloride) 150 mg
AQTIV™ Beet powder (root) 100 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome) 3 mg

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$33$29$25$21$17 Mar 12 $29.99$19.99
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
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Frequently Asked Questions
Is Irwin Naturals L-Citrulline + L-Arginine, Booster for Men a good supplement?

Irwin Naturals L-Citrulline + L-Arginine, Booster for Men, 60 Liquid Soft-Gels received a product quality score of 64/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 10 active ingredients with 20 servings per container. 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 L-Citrulline + L-Arginine, Booster for Men?

Irwin Naturals L-Citrulline + L-Arginine, Booster for Men contains 10 active ingredients: Calories (35), Total Fat (2.5 g), Protein (3 g), Vitamin C (as Ascorbic Acid) (100 mg), Flaxseed Oil (50% Alpha linoleic Acid (ALA), 825 mg) (seed) (1,650 mg), L-Citrulline (750 mg), and 4 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals L-Citrulline + L-Arginine, Booster for Men safe to take?

Irwin Naturals L-Citrulline + L-Arginine, Booster for Men, 60 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.