Four Loko Sour is a flavored malt beverage known for its bold taste and high alcohol content. It is part of the Four Loko brand, which gained popularity for its unique combination of flavors and energy-boosting ingredients. The sour variant offers a tangy twist, appealing to those who enjoy a more tart beverage. Each can of Four Loko Sour typically contains a mix of fruit flavors, providing a refreshing experience. It is often consumed at parties and social gatherings, making it a popular choice among young adults. However, due to its high alcohol content, moderation is advised.