The great refreshing taste of Diet Coke with no caffeine. Add some sparkle to your day without the caffeine, with a crisp, refreshing Diet Coke Caffeine Free! Diet Coke is a sugar free, low calorie soft drink. - Caffeine Free - No Sugar - No Calories - Contains plant extracts and sweeteners - Contains a source of Phenylalanine Serve over ice with a slice of lime. Keep cold in the fridge. Please recycle.