There is liquid caffeine you can add if you're just in it for the caffeine jolt. A capful of 5150 juice is 83mg and is comparatively extremely cheap when weighed against pre-made energy drinks and 5 hour energy.
You can add it directly to the coffee, which will make the coffee much more bitter, or you can take a shot of it and then drink your coffee as normal.
I can say from experience that although I am finding myself more and more immune to coffee, soda, and 5-hour energy, 5150 still works (and works well, and fast). Perhaps it's because so much of the caffeine is absorbed in the mouth.
Without wanting to preach, I wanted to say, as NBenatar mentioned: no matter what route you go, be careful. I also know from experience that caffeine addiction is very bad, and actually makes you significantly more tired. Over time you need the morning caffeine just to reach energy levels that normal people experience without any caffeine. From the second article:
The millions of people who depend on a
shot of coffee to kickstart their day
are no more alert than those who are
not regular coffee drinkers, say
A cup of coffee, suggests a study,
only counteracts the effects of
caffeine withdrawal that has built up
I can say with all honesty, the first week of drastically cutting back my caffeine really sucked, but now I'm more alert in the morning than my colleagues who drink coffee like it's their job...though, we're programmers, so I guess it kind of is their job :)