Dioralyte sachets natural contain rehydration salts consisting of sugars and salts glucose sodium chloride potassium chloride and disodium hydrogen citrate they are used to replace body fluids lost as a result of acute diarrhoea diarrhoea makes you lose more fluids and electrolytes salts such as sodium and potassium than you usually would and can make you dehydrated sachets of rehydration salts are used to replace body fluids lost as a result of diarrhoea this is particularly imp