Well if my recollections from way back in the time of being a barista is right, a typical shot of espresso is about 80mg while a full size cup of coffee is about 200mg. The common caffeine pills like viverin/no-doze are also around 200mg. The general recommendation for average adults is to keep it under 400mg per day.

So all that said the whole pack would be about 4 times the daily recommended.