Its major use today is in the treatment of cardiovascular diseases. The last two reasons are believed to account for the cardiovascular benefits. Most studies with coenzyme Q10 have found that it protects against the cardiac toxicity caused by some chemotherapy, especially Adriamycin. Studies have shown that taking 90 mg of the enzyme per day may reduce pain and weight loss, increase appetite, and decrease metastases in cancer patients. However, additional studies are needed to evaluate the use of coenzyme Q10 as a complementary therapy for cancer patients.
Absorption varies from patient to patient.
This means that one person might take 100 mg per day and attain an effective blood level of coenzyme Q10. Another person may require two to three times this amount to attain the same blood level. Because of the discrepancy in absorption rates, people taking coenzyme Q10 should have their blood serum levels monitored. This is because the liver helps remove the enzyme from the body. Individuals who take diabetic medications, or medications to lower their cholesterol should ask their health care professional if it is safe for them to take coenzyme Q10.