For those who are not familiar with it in Greece, Lamberts is one of the top companies in the field of supplements and research (along with Solgar and a couple more).
This is particularly important in supplements like CoQ10 where the labeling of the active ingredient must correspond to reality. As for effectiveness, especially those who do aerobic exercise will see results in 1-2 weeks by observing their heart rate during the same activity (walking or running at a steady speed).