Super Fildena typically contains sildenafil for erectile dysfunction and may also contain another active ingredient depending on the formulation. You should stop using it and seek immediate medical attention if you experience any of the following: Chest pain, irregular heartbeat, or severe shortness of breath Sudden loss of vision in one or both eyes Sudden decrease or loss of hearing, especially if accompanied by ringing in the ears or dizziness An erection lasting longer than 4 hours (priapism), which can cause permanent damage if untreated Severe allergic reactions, such as swelling of the face, lips, tongue, or throat, difficulty breathing, or severe rash Fainting, severe dizziness, or signs of very low blood pressure Seizures or severe neurological symptoms People who are prescribed nitrate medications for chest pain or who are advised by their doctor to avoid ***** activity because of serious heart conditions should generally not use sildenafil-containing medications unless specifically cleared by a healthcare professional.