Bioavailability of coenzyme Q10 (CoQ10) was evaluated with and without BioPerine ® supplementation in a double-blind, single dose clinical study. After 21 days of supplementation, co-administration of BioPerine ® resulted in an absolute increase in CoQ10 serum levels by 1.12 μg/ml as compared to the absolute increase of 0.85 μg/ml in the ...