We want you and all of our customers to be comfortable when taking Basis, so we offer detailed information about our supply chain and commitment to quality here: https://www.elysiumhealth.com/en-us/basis/supply-chain. In addition to undergoing rigorous third-party testing, Basis is NSF International Certified for Sport, meaning that every lot of Basis is tested to ensure that it meets NSF International purity and quality standards.