CoQ10 is highly concentrated in heart muscle cells due to the high-energy requirements of these cell types. Myocardial biopsies of patients with various cardiac diseases showed a CoQl0 deficiency in up to 75% of cases!9
Research has shown that orally administered CoQl0 can improve functioning of myocardial tissue, strengthening the heart’s contractions and making it beat more strongly .CoQ10 also acts as an antioxidant to control free radicals produced during cardiac interventions (including angioplasty, thrombolysis, and surgery).
Accordingly CoQl0 has been used in the treatment of different heart disorders that include arrhythmias related to primary cardiomyopathies or secondary forms of heart failure.10 A 1998 study observed patients with acute myocardial infarction.11 For 28 days one group received 120 mg of CoQ10 and the other group received a placebo. After treatment, total arrhythmias were 9.5% in the CoQ10 group compared to 25.3% in the placebo group. CoQ10 produced a significant reduction in angina pectoris and left ventricular dysfunction. Non-fatal infarction and cardiac deaths also were significantly lower in the CoQ10 group. This shows that CoQ10 helps prevent potentially life-threatening dysrhythmias during the immediate period following a myocardial infarction. This is the period of time when arrhythmia has the greatest likelihood of causing death.