Optibac probiotics for travelling abroad gives you probiotic capsules that will help keep upset tummies at bay while youre travelling abroad each capsule contains natural cultures which strengthen your immunity and support a healthy digestive system live probiotic cultures for your travels each optibac capsule has 5 billion high quality live cultures along with l acidophilus rosell 52 and s boulardii these capsules help keep your resistance up and support digestive health when traveling to