Caffeine comparisons work best when the can size and serving basis are clear. Start with Alani Nu Energy Drink – Pink Slush by Paris Hilton (12 Drinks, 12 Fl Oz. Each), then read its current panel for the actual caffeine declaration. Do not assume another flavor or brand uses the same amount. Distinguish caffeine per serving from caffeine per entire container before comparing drinks, and avoid treating a larger amount as an automatic measure of better value or performance.