Erection problems are common in adult men. In fact, almost all men experience occasional difficulty getting or maintaining an erection. In many cases, it is a temporary condition that will go away with little or no treatment. In other cases, it can be an ongoing problem that can damage a man's self esteem and harm his relationship with his partner and thus requires treatment. If men has difficulty having or keeping an erection more than 25% of the time, it is considered a problem. Sildenafil (Viagra), vardenafil (Levitra), and tadalafil (Cialis) are medicines available for treatment of mild-to-moderate erection difficulties caused by either physical or psychological problems. Below we present a wide list of erectile dysfunction medications available for sale in Singapore and Malaysia.