Doctors prescribe antibiotics for all kinds of bacterial infections in the body including those related to Ulcerative Colitis. Antibiotics kill off bacteria. One big problem is that they also kill off the good bacteria in the colon. When the good bacteria are killed off the bad bacteria take over. This can be very dangerous.
One bad bacteria is call C. difficile or C-difffor short, is the most significant causes of pseudomembranous colitis a severe infection of the colon. It often happens after normal gut flora (bacteria in the colon) is eradicated by the use of antibiotics. Treatment is stopping any antibiotics and commencing with a course of specific anticlostridial antibiotics, like metronidazole (flagyl). Flagyl however has unpleasant side effects. It is known to cause intestinal distress and can also cause bloody diarrhea.
It is extremely important for people with Ulcerative Colitis to take probiotics (good bacteria) while taking antibiotics. C.Difficile can be deadly and most likely will require hospitalization. Another treatment for C-Diff is Fecal Transplants where human stool is placed in the affected colon.
Probiotics for Adults
Another overgrowth that can happen from antibiotics is yeast/candida overgrowth. This can also cause Ulcerative Colitis symptoms. Again, probiotics are your best defense against a yeast overgrowth.