Fluid replacement is the most important element of treatment. While water is often enough, oral rehydration salts (such as Hydrolyte) can help to increase rehydration and replace electrolytes lost through vomiting and diarrhoea. In milder cases, rehydration is all that’s required. However, other treatments such as anti-diarrhoea medications, anti-emetic (anti-nausea) medications and antibiotics may be appropriate in certain situations, subject to doctor’s assessment.