Zipfizz is the best additive EVER!!! I get it at Costco, 30 servings for $27 so just under a buck per serving. I add it to my water and feel energized for 8 hours. There is a little caffeine in it, but the zip comes from the 41000% B12. That is right, 41,000 % of the daily recommended dose. Nothing else comes even close. Unfortunately it didn't work for me today as I am so drugged up with allergy medicine, but it did keep me functioning at work.
It is sure a good thing that I am on the Pacific coast so I can type this late at night and still qualify for the A to Z challenge. It is reminding me of that book "How To Eat Fried Worms," where the kid becomes more and more creative in his attempt to eat 30 worms in 30 days.