- Vidalista professional is a medicine that men use to overcome their impotence problem. This drug is a powerful drug combined with the main ingredient of tadalafil which helps a lot in maintaining the erection process during intercourse for a long time. This drug does not cure any other sexual problem. The effect of this drug lasts for a maximum of 36 hours. How to take this medicine on an empty stomach. Visit our store vidalista.us for more information.