Many men suffer from erectile dysfunction (ED) but do not talk about it openly. But now Kamagra is the best solution for this. This medicine contains the main ingredient sildenafil citrate which is very useful in curing male impotence. This medicine improves the blood flow to the male genitals so that they can get a longer erection during sex. This medicine should be taken by men 18 years and above. You should take this medicine 45 minutes before intercourse so that you can enjoy intercourse with your partner. The effect of this medicine lasts for 4 to 6 hours.