Filitra 40 mg only as prescribed by a healthcare professional. Do not take more than the recommended dose, as this can increase the risk of side effects. Common side effects may include headache, flushing, stuffy or runny nose, indigestion, dizziness, and back pain. Serious side effects are rare but may include sudden vision or hearing loss, prolonged erection lasting more than 4 hours (priapism), or allergic reactions. If you experience any concerning side effects, seek medical attention promptly. https://www.flatmeds.com/product/filitra-40-mg/