The beverage comprises carbonated water, sugar, acids (citric acid, malic acid), natural watermelon and melon flavourings with other natural flavourings, preservative (potassium sorbate), acidity regulator (sodium citrates), and vegetable and plant concentrates (carrot, safflower). These ingredients work together to deliver the signature taste of Schweppes Watermelon Melon Soda, balancing sweetness with the characteristic fruitiness of watermelon and melon. ​

Schweppes Watermelon Melon Soda 24 × 200ml is free from the 14 major allergens, including gluten, dairy, nuts, soy, and sulphites, making it suitable for individuals with common food allergies. It is also gluten-free, GMO-free, and suitable for vegetarians and vegans. The product does not contain any artificial colours, catering to health-conscious consumers seeking a natural beverage option.