Tadaflo 5 mg, which contains tadalafil, is commonly used to treat benign prostatic hyperplasia (BPH) and erectile dysfunction. Some side effects can occur during the initial period of use but often lessen or disappear with continued treatment as the body adjusts. These transient side effects may include headaches, back pain, muscle aches, flushing, nasal congestion, or indigestion. Typically, such reactions are mild and resolve within a few days to weeks. For most users, the body becomes tolerant to these effects, reducing their frequency and intensity over time. However, if side effects persist or worsen, it's important to consult a doctor.