Does crystal light drinks contain cafeine?

Crystal Light does not contain caffeine. This is because it is a caffeine-free alternative to regular soft drinks. Instead of caffeine, Crystal Light uses sweeteners like aspartame, acesulfame potassium, and sucralose to provide a sweet taste without the added calories. Some Crystal Light flavors, such as Crystal Light Energy, do contain small amounts of caffeine, but these are clearly marked on the product label.