We've been taught that all bacteria is bad. The truth is that there are some good bacteria that your gut needs to maintain optimum digestion and assimilation of nutrients from food. Lactobacillus acidophilus, or simply acidophilus, is one of the "friendly" bacteria that populate the intestinal tract where they aid in digestion and help maintain a healthy balance of microflora. Acidophilus with Citrus Pectin from Rugby is a great, natural way to replenish your body's levels of these healthy gut bacteria. Gluten free.