Says it restaures you for 5-8 more hours of game.
http://www.manapotions.com/
SIX-PACK mana pots:
12-PACK:
From their "about" lol
What is it going to do to me?
It will bump your mana or your HP up +160 (real world humans have about 100 mana, by the way). It's 5-8 hours of smooth, jitter-free energy. When it comes to caffeine content, this potent shot is equivalent to about two 8-ounce Red Bulls? or four cups of crappy office coffee.
What is the Cooldown on a Mana Energy Potion?
While everybody has a different reaction to caffeine and vitamins, your Cooldown will be far more than two minutes. In fact, we highly recommend that you do not drink more than one of these every 24 hours (or 1,440 minutes).
You must be a level 16 or higher to use this potion, by that we mean not recommended for mortals under 16.