Kamagra side effects how does it help to use the drug? It improves that drug in sildenafil in sexual intercourse. You should take this medicine with ground or light food. Take that medicine once in 24 hours. This drug shows a long lasting effect of 4-5 hours. It works more when a man is sexually aroused. This medicine increases blood flow. It works in erectile dysfunction to achieve an erection. Fix that time and take that medicine. It is recommended.