Canderel tablets typically contain dextrose, a sweetener such as sucralose or aspartame and acesulfame-K, and a stabiliser like cross-linked sodium carboxy methyl cellulose. Some versions also include lactose, a milk derivative, as a bulking agent.The primary allergen is milk (lactose), which may be present in some formulations. Additionally, versions containing aspartame include a source of phenylalanine, which must be avoided by individuals with phenylketonuria (PKU), a rare genetic disorder. The manufacturer also notes that the tablets may contain trace amounts of milk, wheat, soy, and tree nuts due to shared processing facilities.