Zamzam carbonated soft drinks, having the best quality and the highest health standards, are considered among the best in this field. This soft drink is specially formulated in Zamzam company and is available in "cola, orange, lemon and lemonade" flavors in different sizes and packages. When you are stressed or tired, drinking a glass of carbonated soft drink will calm you down. Recent research has shown that drinking soft drinks by reducing cortisol makes us feel less tired and less stressed.