Different orange sodas vary slightly in ingredients; however, the ingredient list for Sunkist orange soda includes carbonated water, high fructose corn syrup and sugar. The soda also contains caffeine, citric acid and sodium benzoate. Other ingredients include modified food starch, glycerol ester of wood rosin, ascorbic acid and yellow and red dyes.
The Sunkist label lists natural flavors as an ingredient, but does not expound upon the specific natural flavors used. Both sodium benzoate and ascorbic acid are used as preservatives. Sunkist has a fair amount of both sugar and caffeine, with 52 grams of sugar and 41 milligrams of caffeine per 12 ounces of soda.