Fermented dairy products, especially real Yoghurt, are often tolerated better by lactose
malabsorbers than unfermented dairy products. The intake of dietary supplements containing
acid Lactase derived from Aspergillus oryzae with lactose containing foodstuffs is known to
reduce/alleviate symptoms of lactose intolerance in lactose malabsorbers. The study aims to
compare the effect of the intake of a combination of yoghurt bacteria and acid lactase to the
effect of yogurt bacteria or acid lactase alone on the lactose digestion in lactose
malabsorbers. It is hypothized that the combination preparation will be more effective and/or
will show a more reliable effect than the two mono-preparations.