Causes, symptoms and current findings Sorbitol, also known as sorbitol, is a sugar alcohol that occurs naturally in various fruits such as apples, pears and plums. In the food industry, sorbitol is often used as a sweetener and humectant and is known under the E number E420. In the case of sorbitol intolerance, also known as sorbitol malabsorption, the small intestine cannot … [Read more...] about Sorbitol tolerance