As a cancer patient, i've been taking ubiquinol 45 years, which is coq ten's, most bioavailable form. In looking for the appropriate dose 400 mg, I found piping rock, which advertised "mega-sorb" CoQ10. The price for ubiquinol, the most bioavailable form is usually higher.So I was certain that's what I was getting.But that's not true. After receiving the product and seeing that the label made no reference to the type of coq 10I was getting, I had to do extensive research and found that indeed, by adding a little black pepper to their formula. They were selling the cheaper version which is harder to metabolize.I asked for my money back, the response was less than accommodating. I will never ever Buy from this company again.