Vilitra 10 mg is usually taken orally about 30 to 60 minutes before physical activity. The effects can last for up to 4 to 5 hours, providing a window of opportunity for physical intercourse. It does not cause an automatic erection; physical arousal is necessary for the drug to work. This medication is generally well tolerated but may cause side effects such as headache, flushing, nasal congestion, dizziness, or upset stomach.
https://www.genericday.com/vilitra-10-mg.html