CoQ10 has been shown to improve symptoms of congestive heart failure. Although findings are mixed, CoQ10 might help reduce blood pressure. Some research also suggests that when combined with other nutrients, CoQ10 might aid recovery in people who've had bypass and heart valve surgeries.CoQ10 has been shown to improve symptoms of congestive heart failure. Although findings are mixed, CoQ10 might help reduce blood pressure. Some research also suggests that when combined with other nutrients, CoQ10 might aid recovery in people who've had bypass and heart valve surgeries.CoQ10 has been shown to improve symptoms of congestive heart failure. Although findings are mixed, CoQ10 might help reduce blood pressure. Some research also suggests that when combined with other nutrients, CoQ10 might aid recovery in people who've had bypass and heart valve surgeries.CoQ10 has been shown to improve symptoms of congestive heart failure. Although findings are mixed, CoQ10 might help reduce blood pressure. Some research also suggests that when combined with other nutrients, CoQ10 might aid recovery in people who've had bypass and heart valve surgeries.