Sulfasalazine is used to treat ulcerative colitis (UC), and to decrease the frequency of UC attacks. Sulfasalazine will not cure ulcerative colitis, but it can reduce the number of attacks you have.
Sulfasalazine is also used to treat rheumatoid arthritis in children and adults who have used other arthritis medicines that did not work or have stopped working.
Sulfasalazine may also be used for purposes not listed in this medication guide.
