They're called Alcopops. They're frozen, alcoholic drinks being sold in those countries. However, two German medical experts have found isopropanol in several of the flavored drinks. Isopropanol is broken down quickly by the liver like its counterpart ethanol. Isopropanol is best known as an industrial solvent, or a substance used to remove another substance from its original place.
Carbon dioxide acts as the solvent and carries the caffeine away from the beans.
In this case, isopropanol was being used as a solvent to remove the valuable fruit flavors from raw fruit. This flavoring is then added to the Alcopops. Separating the flavorings from the isopropanol is an expensive process. High temperatures typical of conventional distillation can break down the flavorings and alter the way they taste. Typically, more expensive routes of separation must be employed.