Dioralyte oral electrolyte supplement sachets are a fluid and salt replacement aid during times of illness providing fast and effective treatmenta pleasant tasting citrus flavoured sachet to replace fluids and salts lost during attacks of diarrhoea and dehydration in children and adults when you have diarrhoea you lose more fluid and electrolytes than you normally would which can make you dehydrated these sachets are designed to replace the fluids lost as a result of diarrhoeadosage adult