To date, there have been at least 34 placebo controlled trials using CoQlo in cardiovascular
disease involving a total of 2152 patients with no toxicity or drug interactions reported in the
CoQlo group as compared to the placebo group. Most of these controlled trials have been
reviewed (Langsjoen 1998, Langsjoen 1999). In addition to these controlled trials there have
been many open-label long term trials using CoQlo in doses up to 600 mg per day with up to
eight year follow up, again with a complete lack of toxicity. In heart failure alone there have
been at least 39 open trials with supplemental CoQlo published involving 4498 patients again
with remarkable safety with the only reported side-effects being rare cases of mild nausea.