Have you considered getting the digestive back to a health state using probiotics?? Not just any probiotics but good probiotics that contain 100% live active lactic bacteria and multi-strains - both colonizing (permanent) and transient. In addition, the bacteria must be protected from the stomach acids when ingested so that they can be released in the intestines to do its work effectively.
You need good flora to help the system to function properly usch as food breakdown and absorption. The lactic bacteria does exactly that and in addition, they produce natural Antibiotics that are anti-septic to harmful and pathogenic bacteria. The colonizing strains will prevent re-infection by these harmful bacteria and prevent further attacks. The key word is prevention after the problem has been treated with Antibiotics .
Major nutrition companies like Nestle (Switzerland) and Abbot Laboratories (US) are adding lactic bacteria to infant formulae. They are also committing funding to research to find out how the lactic bacteria are beneficial to the human body. It is known that babies fed on mothers milk (which contains lactic bacteria) are generally healthier and stronger than those not fed mother's milk.