It's a soda. A citrus soda, to be precise. It's a unique lemon, lime, and orange flavor trifecta of a surprisingly good citrus beverage that delights and refreshes the taste buds. It's like a giant pipeline of refreshment channeled directly to you for the sole purpose of quenching your thirst. Experience the next level of thirst-quenching refreshment with Diet Sun Drop soda. Sun Drop was first invented in 1928 but was reformulated in 1949 by Charles Lazier with the addition of caffeine. That was a game-changer that transformed the delicious drink into a citrus force of nature that people can’t get enough of. With the same unique mash up of lemon, lime, and sweet orange flavors of Sun Drop, Diet Sun Drop delivers a surprisingly bold citrus blast to kick-start your taste buds with only 5 calories per serving. Drop into a bright new world of flavor with Diet Sun Drop soda.