Love it light? Add some sparkle to your day, minus the calories with Diet Coke Diet Coke is a sugar free, low calorie soft drink. No Sugar No Calories Gluten-free, dairy-free and nut-free Contains vegetables extracts and sweeteners Coca-Cola and the Environment Coca-Cola is committed to making a positive difference - to the health of the planet, consumers and the communities it serves. The company is working hard to reduce its impact on the environment in everything it does - growing more while using less in areas such as energy and water use, waste reduction and recycling - and by encouraging people to think more about the positive impact they can have on their local environment.