Chapter One

Chapter One receives a brand trust score of 0/100 in GoodSupp's independent analysis. The company was founded in 2019 and is headquartered in Brooklyn, NY, USA. They hold 1 verified certifications including Vegan Certified. These certifications are independently verified by GoodSupp and indicate the brand meets recognized quality, purity, and manufacturing standards. Note: Chapter One has 3 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.

Yes. Chapter One holds 1 verified third-party certifications: Vegan 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 Chapter One supplements are: Vitamin D3 Gummies, 60 Gummies (25 mcg (1000 IU) Per Gummy) (score: 87/100); Sleep, Melatonin, Flavored, 120 Gummies (score: 83/100); Sleep, Melatonin Gummies, Flavored, 60 Gummies (2.5 mg Per Gummy) (score: 83/100). 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.

Chapter One is headquartered in Brooklyn, NY, USA. The company was founded in 2019. They currently offer 17 products in their supplement lineup. Their official website is zahler.com/collections/g-is-for-gummies. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.