Each Batch is Individually Tested - We test each batch both ourselves and through a third-party independent laboratory to ensure our ingredients contain the correct standardized level of purity and active ingredients. We also test each batch for any possible additives, contaminants, and impurities to ensure the highest level of quality. Quality, First, and Foremost - Toniiq products are produced in a GMP-certified and NSF-approved state-of-the-art manufacturing facility in the USA. Setting a New Standard for Purity - To ensure that you are getting the highest-quality product, each batch is tested for quality and purity both during and after manufacturing. Highly Purified and Bioavailable - PQQ has amazing health benefits, but purity and absorption have always been a major challenge for this compound; something most other mitochondria supplements like PQQ 10 mg, PQQ 40mg, and PQQ supplement 20 mg don’t provide as it requires an extra step (and expense) in the manufacturing process. At a 99%+ purity level, Toniiq PQQ provides some of the purest, most potent PQQ available. The Highly Purified Form of PQQ - Toniiq PQQ capsules contain 20mg of the highest quality pyrroloquinoline quinone in each capsule– ethically sourced and produced using a production process to ensure 99%+ standardized level of purity (other PQQ supplement products won't disclose their level of purity).