It's from the Dominican Republic (which is usually good coffee anyway) with added Taurine, L-Theanine, Alpha GPC and Deanol.
The Alpha GPC is supposed to be a cognitive enhancer and has been used to treat alzheimers.
The L-Theanine is an amino acid and has been proven to lower anxiety, aid better sleep and when paired with caffeine it gives faster reaction and memory reaction times.
Deanol has similar cognitive enhancements to Alpha GPC along with improved red blood cell function which helps with oxygen efficiency, muscle function, etc...
Taurine has a number of functions which I can't be bothered to list as I'm on my phone but it's essential in the body, Wikipedia gives a lot of good info on it.
Definitely works for me as a pre-workout over regular coffee, I've got a bag of the regular and the Jujimufu dark blend which I'm currently working through. This one has quite a strong dark taste to it which I like, will definitely be getting more when this is gone!