Save your money and get yourself some real kefir grains (one time investment) and get your hands on raw milk. Find it on westonaorice.org Best and cheapest probiotic you can get + vitamins + minerals.
Eveb If you are allergic to milk I am pretty sure you will tolerate raw milk kefir.
I spent 100$ on probiotics per month. Now I get one bottle for 1,50$ !!!!