Créche Guard Probiotic Immune Choc Bars. A 3-in-1 probiotic supplement for children from the age of 2 years, in a delicious chocolate chewable bar. These great tasting Choc Bars contain 2 Billion Colony Forming Units (CFU’s) of HOWARU® Bifido-B. Lactis HN019tm as well as a combination of vitamins & minerals. Taken daily they are essential for maintaining a healthy gut & immune system, in a format that children will love.