I am taking this nutrient because my doctor told me I am deficient in it after test. I don`t know for now how it help me but I already tried it with my mother. She had tumor of the breast, probably cancer. I sent her CoQ10 and Iodine and many other supplements. At that time I did not know that CoQ10 can help even with metastatic cancer according to research in Germany. My mom is fine now and her tumor was gone last year!