The best probiotic there is is KEFIR. The great thing is that once you have the kefir grains, you just add milk each day, strain out the grains and you have a wonderful probiotic drink and then just add milk to the strained grains. You can get these grains free from the wonderful kefir community. Here's a link: http://www.torontoadvisors.com/Kefir/kefir-list.php. Home this helps.