The formulation includes carbonated water, glucose syrup (13%), citric acid, lactic acid, sodium citrate (acidity regulator), flavourings, potassium sorbate (preservative), caffeine, sweeteners (sucralose, acesulfame K), ascorbic acid (antioxidant), colours (sunset yellow, ponceau 4R), and niacin (vitamin B3). These ingredients work together to provide a balanced isotonic drink that supports hydration and energy during exercise.​

Lucozade Energy Original contains a source of phenylalanine due to the presence of aspartame, making it unsuitable for individuals with phenylketonuria (PKU). The drink is free from common allergens such as dairy, gluten, and nuts. However, it contains sulphur dioxide and sulphites, which may cause allergic reactions in sensitive individuals. The bottle’s sports cap is not suitable for children under 3 years due to choking hazards. It’s advisable to consume this beverage in moderation and consult the product label for specific allergen information.