Tadalista 20 is a drug which helps men to attain and maintain an erection. It is used in the treatment of erectile dysfunction and benign prostatic hyperplasia (BPH). This drug is a phosphodiesterase 5 inhibitor. It works by boosting the level of cGMP in penile smooth muscle to increase blood flow and to produce an erection. Before taking this medication, tell your doctor if you have any other medical conditions, including: high or low blood pressure, heart disease, angina, kidney or liver disease, stroke, and a history of seizures. You should also tell your doctor if you have allergies or have recently taken other medications that can affect your heart or circulation.