How can I market my male enhancement product?

Selling allopathy medicines through the internet is illegal but I find lots of natural products on the net. are they legal?And also I would like to market my male enhancement product?What are legal barriers attached to it?What are the problems I will face in the future if I market my product personally?What is the total turn over of enhancement products all over the world?My product is a naturally occurring product used for many generations to improve male potency.