Fildena Super Active contains sildenafil, and having heart disease does not automatically make sildenafil unsafe. People with stable, well-controlled heart disease may be able to use it, but those with unstable symptoms need medical assessment first.   Fildena Super Active important warning Do NOT take sildenafil with nitrate medicines used for chest pain, such as: Nitroglycerin Isosorbide mononitrate Isosorbide dinitrate The combination can cause a dangerous, potentially life-threatening drop in blood pressure. F FDA Access Data +1 Extra caution is also needed with alpha-blockers and some blood-pressure medicines, because blood pressure can fall further. F FDA Access Data If you tell me what heart problem you have and the names/doses of your heart medicines, I can explain whether sildenafil is generally considered compatible with them.