Anti-Inflammation Drugs. Most people are first treated with drugs containing mesalamine, a substance that helps control inflammation. Sulfasalazine is the most commonly used of these drugs. Patients who do not benefit from it or who cannot tolerate it may be put on other mesalamine-containing drugs, generally known as 5-ASA agents, such as Asacol, Dipentum, Lialda, Apriso, or Pentasa. Possible side effects of mesalamine-containing drugs include nausea, vomiting, heartburn, diarrhea, and headache.
Cortisone or Steroids. Cortisone drugs and steroids -- called corticosteriods -- provide very effective results. Prednisone is a common generic name of one of the drugs in this group of medications. In the beginning, when the disease it at its worst, prednisone is usually prescribed in a large dose. The dosage is then lowered and usually discontinued once symptoms have been controlled. These drugs can cause serious side effects, including greater susceptibility to infection.
Immune System Suppressors. Drugs that suppress the immune system are also used to treat Crohn's disease. Most commonly prescribed are 6-mercaptopurine or a related drug, azathioprine. Immunosuppressive agents work by blocking the immune reaction that contributes to inflammation. These drugs may cause side effects like nausea, vomiting, and diarrhea and may lower a person's resistance to infection.
Biologics. Remicade is the first of a group of medications that blocks the body's inflammation response. The FDA approved the drug for the treatment of moderate to severe Crohn's disease that does not respond to standard therapies (mesalamine substances, corticosteroids, immunosuppressive agents) and for the treatment of open, draining fistulas. Remicade, the first treatment approved specifically for Crohn's disease, is a TNF substance. Other drugs in this class include Humira, Tysabri, and Cimzia. Biologics can have serious side effects and are usually used when more conventional therapy fails.
Antibiotics. In inflammatory bowel disease antibiotics are used to treat bacterial overgrowth in the small intestine caused by stricture, fistulas, or prior surgery. For this common problem, the doctor may prescribe one or more of the following antibiotics: ampicillin, sulfonamide, cephalosporin, tetracycline, or metronidazole.
Anti-Diarrheal and Fluid Replacements. Diarrhea and abdominal cramps are often relieved when the inflammation subsides, but additional medication may also be necessary. Several antidiarrheal agents could be used, including diphenoxylate, loperamide, and codeine. Patients who are dehydrated because of diarrhea will be treated with fluids and electrolytes.