Oh. Drug capital here is Tamarindo, though they mostly only deal in weed and coke.
Apparently, my friends that aren't boarders say that mushrooms can be found very easily (psilocybe cubenisis), due to the high cow to human ratio (XD). Um, a few friends tried to trip acid, but it didn't work for them, so I wouldn't recommend you buy any. (I've only been here two weeks, and I already know so much shit.)
If you plan to do drugs, that is...