Fildena 150 mg tablets contain the active ingredient Sildenafil which works by increasing the blood flow to the penis. It is denoted as PDE5-inhibitor. When men are taking it, a man can get an erection up to half hours. Some time erection can last up to four hours in some cases. It depends on your current health condition.
It works by inhibiting the chemical phosphodiesterase in the body. Sildenafil main work is to increase blood flow to the male sex organs (penis). This result is you get a long-lasting erection that may lasts up to 4 hours. If you want a fast result, you may put the pill under the tongue, when it dissolves by itself, you get a result within 15 minutes.