Doppelherz system PRO LACTO BALANCE - Health and Vitality Doppelherz system PRO LACTO BALANCE are probiotic capsules with lactic acid and bifidobacteria cultures. They contain 12 different strains with approximately 6.5 billion selected bacterial cultures that also occur naturally in the gut. A healthy intestinal lining also contributes to the normal function of the immune system. Vitamin B2 plays an important role in maintaining normal energy metabolism. Vitamin C supports the normal function of the immune system and contributes to the protection of cells from oxidative stress. Note: Lactose and gluten free.