Filitra, like other PDE5 inhibitors, requires sexual stimulation to be effective. It does not cause spontaneous erections but enhances the natural erectile response when a man is sexually aroused. Filitra should not be taken by individuals who are allergic to Vardenafil or have certain medical conditions such as severe heart or liver problems, uncontrolled high blood pressure, or a history of stroke.

https://www.genericday.com/filitra-20-mg.html