Men with erectile dysfunction can get treatment with Kamagra. Take this medication half an hour before sexual activity.  One very helpful medication for impotence is kamagra. Sildenafil, a component in this medication, facilitates men's longer sex. Kamagra vs Viagra medication can be taken both before and after meals. Consume this medication with water; do not crush or chew the tablet. Follow your doctor's advice when taking this medication.