Fildena 100 is a powerful generic alternative for treating male erectile dysfunction. Fildena 100 is a PDE-5 inhibitor medicine used to treat erectile dysfunction, or ED. It may be difficult for a man with erectile dysfunction to get and maintain a satisfactory erection. It is one of the most common types of sexual dysfunction among men. Make sure you take the medicine 30 to 60 minutes before you plan to have sex. It is best to store the medication at room temperature. Because users often report experiencing the effects 30 to 60 minutes after intake, this is a timely alternative for people seeking spontaneity in their encounters. Common side effects include headache, dizziness, and flushing. It is important to be aware of these potential side effects and to seek medical attention if they worsen or continue.