Erectile dysfunction (also known as impotence) is a sexual condition where a man cannot sustain a hard erected penis that is required for normal sexual activity. Kamagra 100 is used to treat sexual problems in men. It happens due to decreased blood flow to the penis. This drug helps men to know a strong erection during intercourse. Take this medicine 30 minutes before intercourse so that you can enjoy sex with your partner. You can take this medicine before or after a meal. You should not consume fatty foods or cold drinks with this medicine as it slows down the effect of the medicine.