Hi, i'm looking for a non-carbonated cold drink which contains caffeine to replace my diet coke habit, and get me through. i do not like tea or coffee?

Drink mixes: Some of the brands of flavored drink mixes add caffeine to some of there products. You might find them a good replacement. An energy supplement may do the trick too.

Caffeine: There are many many "energy" drinks that are not coffee or tea or soda based --- got to be very careful: One to try which is reputable: V8 Fusion Energy Drink; a second one: VItamin Water Energy Drink. Shots and highly concentrated caffeine drinks can be "hazardous"