VSL#3 is a probiotic medical food for the dietary management of Irritable Bowel Syndrome, Ulcerative Colitis, or an Ileal Pouch consisting of 8 strains of live freeze-dried lactic acid bacteria. Each sachet contains 450 billion live probiotic bacteria and is supplied in a box containing 30 sachets. VSL#3 mixes easily in water and has a light lemon cream flavor. Ingredients: VSL#3 contains one strain of streptococcus thermophilus, three strains of Bifidobacterium and four strains of lactobacillus in defined ratios. Inactive ingredients: Maltose, lemon flavoring, and silicon dioxide.