BioBlue Leuco Lite: Rapidly Absorbed Leucomethylene Blue w/ Litewater (Deuterium-Depleted Water) for Enhanced Brain & Mitochondrial Support | Wellness & Longevity Supplement | 1% Solution, USP GradeBioBlue Leuco Lite The Cleanest, Most Bioavailable Form of Methylene Blue For Pure Mitochondrial Performance BioBlue Leuco Lite is our ultra pure formulation of USP grade Leucomethylene Blue suspended exclusively in Litewater (10 ppm Deuterium Depleted Water). Designed for those who want the full mitochondrial benefits of methylene blue with the addition of significantly enhanced absorption and bioavailability along with greater antioxidant support.