If you suffer from phenylketonuria you should not use Dioralyte Relief Blackcurrant. If you are suffering from intestinal obstruction, kidney or liver disease, or a condition where your body salts are disturbed or you are on a low potassium or sodium diet ask your doctor before using Dioralyte Relief Blackcurrant. If you are in any doubt, ask your doctor or pharmacist before using this product. Dioralyte Relief Blackcurrant may be used in pregnancy and during breast feeding but only on medical advice. This medicinal product contains up to 2.5 vol % ethanol (alcohol) i.e. up to 191 mg per dose, equivalent to 4 ml beer, or 1.7 ml wine per dose. It may be harmful for those suffering from alcoholism. To be taken into account in pregnant or breast-feeding women, children and high-risk groups such as patients with liver disease, or epilepsy.