I was just in Salta for a week and discovered that coca leaves are for sale everywhere there. I tried them and liked the effect. The high was moderate, about like a double espresso but what surprised me was that my appetite was reduced. Since I've been trying to lose weight, so far unsuccessfully, I would like to see if it would work over a longer term. My question is legality. There is no place locally that sells coca leaves. Is there a provincial or national law against coca leaves? Can they be shipped by bus?