Crystal Light is made with artificial sweeteners. There is controversy as to whether these products are safe.
The most useful would be tea made with loose leaf tea. It is not at all hard to make and contains many anti oxidants that are beneficial. There is also the added benefit of drinking it without any added sugar or using honey which has some healthful properties.
Check out this article for information:
http://www.your-cup-of-tea.com/instant-iced-tea.html
