Zahler

Zahler receives a brand trust score of 81/100 in GoodSupp's independent analysis. The company was founded in 2005 and is headquartered in Brooklyn, NY, USA. They hold 3 verified certifications including Fda Gmp Inspections, Kosher Certified, NSF Certified. These certifications are independently verified by GoodSupp and indicate the brand meets recognized quality, purity, and manufacturing standards. Note: Zahler has 4 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Yes. Zahler holds 3 verified third-party certifications: Fda Gmp Inspections, Kosher Certified, NSF Certified. 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 Zahler supplements are: Vitamin D3 1000 IU 25 mcg (score: 100/100); Magnesium Citrate (score: 100/100); Vitamin D3 Orange 2000 IU Chewable Tablets (score: 100/100). 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.

Zahler is headquartered in Brooklyn, NY, USA. The company was founded in 2005. They currently offer 174 products in their supplement lineup. Their official website is zahlers.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.