The drink’s formulation includes carbonated water and sugar, providing its effervescence and sweetness. Apple juice from concentrate (2%) adds a subtle fruity note, while citric acid and malic acid contribute to its tangy profile. Flavourings enhance the overall taste, and caffeine (0.03%) serves as the primary stimulant. Sweeteners such as acesulfame K and sucralose offer additional sweetness without extra calories. Niacin (vitamin B3) is included to support energy metabolism, and the drink’s distinctive blue hue comes from Brilliant Blue FCF. ​

Lucozade Alert Blue Rush contains a source of phenylalanine, making it unsuitable for individuals with phenylketonuria (PKU). Due to its high caffeine content, it’s not recommended for children, pregnant or breastfeeding women, or individuals sensitive to caffeine. It’s advisable to consume this beverage in moderation.