Caffeine is very bitter. Barq's Root Beer contains caffeine and the company says that it has "12.78mg per 6oz" and that they "add it as a flavoring agent for the sharp bitterness"
There is some question of the validity of the caffeine as a flavor agent argument for soft drinks.
Comments
Barq's and caffeine
There seems to be some disagreement about Barq's and caffeine content. In most locations Barq's does have caffeine. Unless you purchase your Barq's in Utah where it is made without caffeine in an attempt to appeal to the predominant Mormon population. It should also be mentioned that most root beers do not contain any caffeine.
For a short history of the caffeine content in Barq's please visit the unofficial Barq's blog entry on caffeine.
Caffeine Powder
I have ordered pure powder caffeine and I can say it is extremely bitter! It is very effective though... :)
cafeine has absolutely no
cafeine has absolutely no taste at all, ever tried water joe?
no
Caffeine is very, very bitter. Chew a caffeine tablet or try some powdered caffeine.
You are incorrect. Water
You are incorrect. Water Joe contains such a small amount of cafeine it is not tasted. Pure powdered cafeine is extremely bitter.
Caffeine is extremely bitter
I've tasted pure, powdered caffeine (extracted from coffee beans). It is extremely bitter taken as a solid or dissolved in water. The only comparably bitter substance that I've ever tried is dissolved codeine.
Cafeine definately has
Cafeine definately has taste. Try decaf and cafeine coffee then u'll taste the difference.Cafeine tastes bitter.
caffine is very bitter take
caffine is very bitter take it from some one who has drunk caffinated products since he was 4
water joe
My understanding is that the caffeine in caffeinated water is chemically treated to make it tasteless. On the other extreme of the spectrum I present to you the Bevnet review of Krank2O. Bevnet did have kind things to say about other caffeinated water products.