Mountain Dew Energy/Citrus Blast is the version of Mountain Dew found in the United Kingdom, Ireland, Italy, Denmark, the Netherlands, South Africa, Norway, Sweden, and Iceland. It is the same as the EU Version of original Mountain Dew, with only the name being different.
Mountain Dew Citrus Blast uses the same formula of Mountain Dew that's used in other European countries. It's similar to that of original American Mountain Dew, and thus is similar in color and flavor to it. However, the formula is modified, including the use of natural sugars instead of high-fructose corn syrup (similar to Real Sugar).
From 2019 onwards, some countries replaced the current formula with the one used for All Dew - No Sugar, while in Nordic regions (Eg, Denmark, Finland), some of the sugar was replaced with Acesulfame Potassium and Sucralose.
In 1996, Mountain Dew began marketing its products in the United Kingdom, but it ended within a 2-year time span due to bad sales.
It wasn't until June 2010 that the United Kingdom got its own exclusive version - Mountain Dew Energy. Energy subsequently spread to Ireland and Italy as well.
In 2014, the "Energy" wording was removed in the United Kingdom and Ireland, simply calling it "Mountain Dew" there.
It was later renamed to "Mountain Dew Citrus Blast" in 2015 and the drink was introduced in 330ml cans there. The name was also used for Mountain Dew in South Africa, The Netherlands, and Denmark.
In the same year a similar product, "Mountain Dew Electric Citrus", was released in Spain.
When Mountain Dew in Europe received the new designs in 2017, Citrus Blast was released in Switzerland, Sweden, Norway, and Iceland. It sported the new designs and replaced the original flavor in those countries.
- This is only one of many attempts of a Mountain Dew energy drink (see "related flavors" in the infobox). This form of marketing was dropped in favor of it being sold as a soda, rather than an energy drink.
- Although originally marketed as an Energy Drink, Mountain Dew Citrus Blast (previously Energy) is now sold as a regular soda. Despite this, some retailers still sell it as an energy drink.