From Dove, Laurie L. "10 Drinks Your Kids Should Not Be Drinking." 11 May 2010. HowStuffWorks.com. http://tlc.howstuffworks.com/family/10-drinks-kids-should-not-drink.htm
Good list to keep in mind along with some research and reasons as to why not.
1. Smoothies
2. Flavored water
3. Athletic power drinks (e.g. Gatorade)
4. Raw milk, juices and ciders
5. Fruit drinks posing as juices
6. Soft drinks (Coke, Fanta, etc.)
7. Over-sweetened tea drinks
8. Coffee
9. Energy drinks
10. Alcohol