The primary ingredient in a carbonated drink is carbon dioxide (CO2), which is dissolved in the liquid under high pressure, creating the bubbles and fizziness characteristic of these beverages. When the pressure is released upon opening a can or bottle, the carbon dioxide escapes, leading to the effervescent sensation when consumed. Carbonated drinks can include sodas, sparkling waters, and certain alcoholic beverages like sparkling wine. The carbonation process can enhance flavor and provide a refreshing experience. Beyond CO2, carbonated drinks typically contain sweeteners, flavorings, and sometimes acids or preservatives, making them enjoyable but often high in sugar content.