 Survival (1–8 years) in the Coenzyme Q10 group was greater than in a matched control group (n=90) treated with conventional drugs only.The results of this early study showed that long-term Coenzyme Q10 therapy is safe, is effective in chronic heart failure patients with measurable CoQ10 deficiency, and is associated with improved long-term survival compared to conventionally treated patients.Judy's clinical studies of Coenzyme Q10 supplementation of heart failure patients are the forerunners of the international multi-center Q-Symbio Study of the Effect of Coenzyme Q10 on Morbidity and Mortality in Chronic Heart Failure.