Active antioxidant form of CoQ10; self-assembling nano-colloid system for enhanced ubiquinol absorption. A cross-over, pharmacokinetic pilot study (single oral dose) in humans compared an oil-based CoQ10 preparation to CoQ10 in the VESIsorb delivery system and demonstrated a 308% increase in peak blood levels (Cmax) and a 622% increase in area under the curve (AUC(0-10 hr)), a measure of 10-hour bioavailability. In the same study, AUC(0-10 hr) values were 285% and 499% greater with VESIsorb CoQ10 compared to two other solubilized, bio-enhanced preparations.