The chewable, mint-flavoured tablets bring relief so that you can get back to enjoying your day. How does Gastro-Stop Plus work? Gastro-Stop Plus contains two active ingredients for relief of acute diarrhoea and associated gas-related symptoms such as bloating, cramps and wind. The first active ingredient, loperamide, works locally on the digestive system by slowing down the movement of the intestines. This means that there is more time for your body to absorb water and nutrients, which helps to relieve diarrhoea. The second active ingredient, simethicone, helps break up the gas bubbles that form in the intestines, relieving the abdominal discomfort and wind that's associated with diarrhoea. Each tablets contains: Loperamind Hydrochloride 2mg and Simethicone 125mg.