sulfasalazine
noun
sul·fa·sal·a·zine
variants:
or chiefly British sulphasalazine \ ˌsəl-fə-ˈsal-ə-ˌzēn 
\
\
Medical Definition of sulfasalazine
: a sulfonamide C18H14N4O5S used in the treatment of chronic ulcerative colitis
— called also salicylazosulfapyridine