Shortly after finishing a two week course of Doxycycline in August of this year, I started belching a lot. Merely drinking water causes me extreme distress. My thought is the antibiotics wiped out all the bacteria in my gut. Probiotics seem to help, but I do not know how much probiotics is too much. I started out taking one VSL #3 per day and rapidly progressed to two per day. I am now adding a third probiotic, which is a Dr. Ohirra’s or a Renew Life. Has anyone had a similar experience with antibiotics? Will my system ever return to normal? Is it safe to mix and match the probiotics?