The drink comprises water, glucose-fructose syrup, and citric acid, providing its base and tart flavor. It also contains sodium citrate as an acidity regulator and flavorings to enhance taste. Preservatives such as dimethyl dicarbonate, potassium sorbate, and sodium benzoate are included to maintain freshness. Vegetable and plant concentrates from sweet potato, safflower, and apple are used for natural coloring. The product is sweetened with sucralose and acesulfame K and fortified with vitamins including niacin, pantothenic acid, vitamin B6, and vitamin B12.

Boost Limited Edition Isotonic Sport Watermelon & Lime does not list any major allergens such as milk, eggs, gluten, nuts, or soy in its ingredients. However, it contains sucralose and acesulfame K as sweeteners. As formulations can change, it’s advisable to check the product label for the most current allergen information before consumption.