Intoleran Fructase contains 7500 units Xylose Isomerase, an enzyme that converts dietary fructose in the gut into glucose the body readily can absorb and use. Fructose is a monosaccharide found in various fruits, vegetables, processed foods and honey. The fast-acting capsules help with the digestion of excess fruit suger and preventing gas, bloating, abdominal pain and diarrhea associated with fructose intolerance. Intoleran Fructase can be taken prior to any fructose containing meal. The capsules are suitable for children aged from 2 years onwards. After ingestion, the enzyme is active for approximately 30-45 minutes..