Health Aging 8-Hour Sustained Release Dietary Supplement Vegan Gluten Free Non GMO GMP This Product is Suitable for Vegetarians and Gluten-Free 2X more bioavailable than regular PQQ Higher PQQ blood levels over 8 hours. Produced Using Natural Fermentation Quality of Life was the first U.S. company to introduce PQQ, a newly discovered vitamin. Our Innovation continues with the launch of the first-ever sustained-release PQQ in the market. PQQ has specific benefits for the mitochondria - the "power plants" of our cells. Scientific evidence suggests that mitochondrial damage is one of the main causes of aging. The groundbreaking effect of PQQ is that it has been shown to generate new mitochondrial PQQ is backed by 2 published human clinical studies. VitaPQQ -SR contains naturally fermented PQQ in a special micronized sustained-release matrix. Because PQQ is released over time, it stays in the blood longer and is therefore active longer than regular PQQ. VitaPQQ -SR has also been shown to be twice as bioavailable as regular PQQ.