Irwin Naturals

Irwin Naturals receives a brand trust score of 0/100 in GoodSupp's independent analysis. The company was founded in 1994 and is headquartered in Los Angeles, California, United States. They hold 1 verified certifications including Nsf Gmp. These certifications are independently verified by GoodSupp and indicate the brand meets recognized quality, purity, and manufacturing standards. Note: Irwin Naturals has 2 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Yes. Irwin Naturals holds 1 verified third-party certifications: Nsf Gmp. Third-party testing means an independent laboratory — not the supplement company itself — has verified the product's contents, purity, and/or manufacturing practices. This is one of the strongest indicators of supplement quality because it removes the conflict of interest inherent in self-testing. Not all certifications are equal: NSF International and USP are considered the gold standard, while GMP certification indicates proper manufacturing practices.

Based on GoodSupp's quality analysis, the highest-rated Irwin Naturals supplements are: Testosterone Up Peak Performance, 30 Gummies (score: 90/100); Liquid-Gel Multi with Iron (score: 87/100); Only One, Liquid-Gel Multi with Iron, 60 Liquid Soft-Gels (score: 87/100). These scores are calculated from ingredient quality, dosage adequacy, bioavailability, label transparency, and inactive ingredient safety. Scores can vary significantly across a brand's product line — a high brand trust score doesn't guarantee every individual product is top-quality.

Irwin Naturals is headquartered in Los Angeles, California, United States. The company was founded in 1994. They currently offer 130 products in their supplement lineup. Their official website is irwinnaturals.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.