Buy dairy products.. Prepare fruit yoghurt by adding fresh fruit to yogurt. Making ice cream from yoghurt and fruit and adding honey to sweetening

It is best to buy natural dairy products as much as possible, preferably goat's milk and camels. For yogurt, you prefer live yogurt (Live or Bio yogurt). If you prefer fruit yoghurt, you can prepare it by adding fresh fruit to yogurt. Ice cream can be made from yoghurt and fruit and honey added to sweetening.
There is a drink called Actimel®, which contains L. case defenses, which help strengthen the body's defenses.