Tazzle 20 mg is marketed as tadalafil 20 mg, a PDE-5 inhibitor used to treat erectile dysfunction (ED). Tadalafil improves blood flow to the penis when sexual stimulation occurs, helping men achieve and maintain an erection. It does not increase sexual desire and does not automatically produce an erection. Sexual-health awareness means understanding that occasional erection difficulties can result from stress, tiredness, alcohol, anxiety, or relationship concerns. However, persistent ED can sometimes be associated with conditions such as diabetes, high blood pressure, high cholesterol, or cardiovascular disease, so recurring symptoms deserve medical evaluation.