Anti-inflammatory drugs Sulfasalazine (Azulfidine)
Mesalamine (Asacol, Rowasa)
Corticosteroids
Immune system suppressors
Azathioprine (Imuran) and mercaptopurine (Purinethol)
Infliximab (Remicade)
Adalimumab (Humira)
Certolizumab pegol (Cimzia)
Methotrexate (Rheumatrex)
Cyclosporine (Gengraf, Neoral, Sandimmune)
Natalizumab (Tysabri)
http://www.mayoclinic.com/health/crohns-disease/ds00104/dsection=treatments-and-drugs
This is just fyi for the newbies, and is in no way meant to represent the order in which meds are used.