Need some input here...

[tryptonaut]

Coca leaves, well I drank a lot of coca-leafe-tea when I was traveling Peru

drinking coca-leaf-tea is not better than drinking green tea. Nice tea, but nothing more.

What makes the difference is to chew the coca leaves with lime (or another basic substance like natrium hydrogene carbonate - it's sold as "soda" or "natron" in Germany). When doing this, you'll notice that the leaves instantly numb your mouth. The basic substance ("chemically basic", the opposite of "chemically acid") releases the pure cocaine hydrochloride from the leaves, about 4mg from 1g of dried leaves. After about 3-4g of dried leaves you will definitely feel the cocaine!