The effects of Silditop 50 mg can last for several hours, providing a window of opportunity for sexual activity. The duration of action may vary among individuals. The recommended dosage and usage instructions for Silditop 50 mg should be followed as directed by a healthcare professional. It is usually taken orally with a full glass of water. Silditop 50 mg, like other PDE5 inhibitors, does not cause spontaneous erections. Sexual arousal or stimulation is necessary for the medication to be effective.