Erectile Dysfunction is the medicine taken if one is suffering from that disease. As sildenafil that drug is used more in men. It helps the man achieve an erection sufficient for sexual intercourse. Take that medicine for 30 minutes. So erection helps more in sexual activity. Kamagra 100mg Sildenafil contains chemically that drug helps in maintaining erection in man. This drug helps in better blood flow to the area in the body. Some of the side effects of that medicine include flushing headache, stomach pain, dizziness, blurred vision, etc. Take that medicine on the ground.