Caffeine-Free Mountain Dew is a citrus flavored soda, and is yellow-green in color, much like the original flavor. Its packaging uses the same design found on the original flavor's packaging but uses a golden color like the design as the prominent color.
- Technically, this was the first variation of Mountain Dew, having a release in the 1970s in the United States, when America's craze with watching what we put in our bodies was first booming. However, it was not the first flavor variant (see Golden Lime and Aurora).
- Diet Mountain Dew also has a caffeine-free variant, and the Canadian Pitch Black had one for a limited time.
- In Australia, regular Mountain Dew formerly used the same formula as this drink because of caffeine restrictions. It has now been reformulated and contains caffeine. The same went for Canada (now Citrus Charge) and New Zealand (Which changed their formula to include caffeine years ago).