You can buy revatio 20 mg online by visiting the official site as warmthbin.com. Revatio 20 mg is a generic medicine used to treat the erectile dysfunction in adult men. It contains 20 mg of revatio. This medicine is taken 30 to 60 minutes before any sexual activity. If you feel any side effects you are directed to get immediate medical help. This medicine contains some serious side effects such as:
Sudden change in vision or vision loss
Sudden hearing change or hearing loss
Prolonged erection