If you've got an erection for extra than four hours, name a medical doctor. The drug works pleasant whilst taken on an empty belly. Do now no longer take sildenafil in case you also are the usage of a nitrate drug for chest ache or coronary heart troubles. Sildenafil might also additionally motive dizziness. Do now no longer force or perform equipment after taking sildenafil. Drinking alcohol earlier than taking sildenafil can briefly impair the cappotential to get an erection. To get the most enjoy the medicinal drug, it's far counseled now no longer to drink immoderate quantities of alcohol earlier than taking sildenafil.