Patients with lactose intolerance are familiar with the problem: after enjoying certain foodstuffs, the stomach aches and makes unpleasant rumbling sounds. The severity of the complaints depends on the lactose content of the food consumed. This content is highest in powdered milk, which is very widely used in ready-made products. By contrast, foodstuffs that contain less than 0.1 grams of lactose per 100 grams are regarded as lactose-free. In general, foods of this kind do not generally give rise to any complaints.The table below shows what foodstuffs are particularly high in lactose and should therefore be off limits for people with lactose intolerance.