Kamagra is considered to be a very effective medicine for erectile dysfunction. The main ingredient in sildenafil is found inside this drug. The advice of a doctor should be sought while taking this medicine. This drug increases blood flow to the muscles in the penis. So that the act of erection during intercourse is maintained for a long time. This medicine should be taken 30 minutes before sexual intercourse. The effect of this medicine lasts for at least 3 to 4 hours.

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