Irritable bowel syndrome, or IBS, causes problems with digestion including cramps, bloating, gas and alternating severe diarrhea with constipation. According to the Mayo Clinic, more women than men have IBS, which usually begins during young adulthood. Medications used for treating IBS are focused on relieving constipation and diarrhea, and the abdominal pain and depression that IBS may also cause.
Fiber
Fiber supplements can be taken as pills or powders that are mixed into drinks or added to foods and may relieve constipation caused by IBS.
Antidiarrheals
According to the Mayo Clinic, over-the-counter antidiarrheal medications such as Imodium can help to control diarrhea caused by IBS.
Anticholinergics
Anticholinergic medications such as atropine that affect the nerves that control the intestines and bowels can treat IBS by reducing muscle spasms in the bowels.
