So I’ve been to Peru many times, beautiful country, and each time I’ve used coca leaf, which is abundant, cheap, and used often here, but mostly in the form of tea, although I did put it in my mouth to “chew” it before but without the base needed to extract the alkaloids (one being cocaine, in tiny amounts).
Anyhow this time I did use both lime (comes with the bag of coca if you ask) and sodium bicarbonate to activate the alkaloids whilst holding the leafs in your mouth. I’ll outline my experiences below: