Some parts of Peru have a very high elevation that some travelers are not used to. That is why it is handy to always have some coca toffee around or any other coca food (such as tea). Coca products help if you are a little sick from elevation such as minor headaches or just a little sleepy. It is true that these products are made from the coca plant and that this plant is also used to make cocaine. However these products are far from cocaine because many other things are used to make that drug.