Private-label discount chain Aldi Inc., Batavia, Ill., offers Friendly Farms Probiotic Vanilla Lowfat Yogurt with BB-12. The probiotic commercially marketed as BB-12 is one of the most widely studied strains ofBifidobacterium lactis.It has been shown to reduce the duration of diarrhea and help alleviate constipation, thus, it is said to help support a healthy digestive system.