Tadarise pro 20 mg is used to treat ED in men. This drug is very useful for patients with low erection. It spreads adequate blood flow to the penis and relaxes the muscles to enable a full erection. This drug should be taken by men only once a day. The effect of this drug usually lasts for 3-4 hours. This medicine can be taken before or after a meal. This medicine should be used only once in 24 hours.