Hind of profess to convinced is easy decompose inside bowel reach 5- amino salicylic acid for sulphanilamide pyridine, to colonic wall the organization has affinity, have antiphlogistic effect.

• 口服后易在肠内分解为磺胺吡啶及5-氨基水杨酸，对结肠壁组织有亲合力，起到消炎作用。