Fildena 100 mg is used to treat erectile dysfunction and should be taken as directed by a healthcare professional. Typically, it is recommended to take one tablet per day, about 30 to 60 minutes before sexual activity. Do not exceed one dose within 24 hours, as taking more can increase the risk of side effects such as headache, dizziness, or low blood pressure. Fildena should be taken with water and can be used with or without food, although a heavy meal may delay its effect. Always follow your doctor's instructions for safe use.