I have an 87 year old grandfather with congestive heart failure, a pacemaker and renal problems. He also has a stiff heart. Do you think this would help at his age? To answer your question about congestive heart failure and renal problems -- this question should be discussed with your grandfather’s primary health care professional. If you do not have a doctor to discuss this with, we may be able to direct you to one of our doctors that understand how vitamin E interacts with various blood pressure and/or blood thinning medicines. Vitamin E is a natural blood thinner, so it is very important that if he is presently taking prescription medicine for this, that you discuss his options with a healthcare professional that can advise you correctly. Our founder, Roy Erickson, took UNIQUE E® in high doses until he died of old age at the age of 93. Read his feelings here: Founder Letter.