Ans. The most common symptoms of sucrase intolerance are:Sucrase allergy symptoms normally appear after feeding. This occurs because the intestine is full of sugar-loving bacteria and other species (part of our microbiome). These species feed when presented with a buffet of sugars in foods.Gases are formed when the bacteria that usually live in our gut eat the sugar. This makes a person feel gassy and bloated, as well as trigger pain.Diarrhoea is also normal due to the intestine's reaction to sugar. Therefore, diarrhea is a common ailment.Smelly stools.Pressure in the abdomen.The feeling of being bloated.