It's not actually that much. I just checked
>A container of 100 grams has a caffeine content of about 200 mg. Since each container contains 16 individual embossed portions, each portion has a caffeine content of about 12.5 mg caffeine.
>Current containers indicate "6 portions of Scho-Ka-Kola contain about as much caffeine as a cup of coffee". This amount corresponds with about the caffeine content of energy drinks (80 mg per 250 ml).
https://en.wikipedia.org/wiki/Scho-Ka-Kola