An enema formulation for the treatment of ulcerative colitis

By combining thalidomide with carbomer gel to prepare an enema formulation, the problems of large side effects and poor therapeutic effects of oral thalidomide formulations are solved, achieving the effects of high local drug concentration, few side effects, long retention time, and good therapeutic effect.

CN121550225BActive Publication Date: 2026-07-24PEKING UNION MEDICAL COLLEGE HOSPITAL
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Patent Information

Application Number
CN202510293673.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-07-24
Estimated Expiration
2045-03-13

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Abstract

The application discloses an enema preparation for treating ulcerative colitis, which contains 0.01-2g of thalidomide, 30-150ml of dimethyl sulfoxide, 1-5g of carbomer per liter of the enema preparation, and further comprises a pH regulator for adjusting the pH to 5.5-9.0 and deionized water. The enema preparation has simple components and preparation method and high biocompatibility, can improve the local concentration and residence time of thalidomide in the intestinal tract, reduce the side effects of thalidomide and improve the treatment effect of thalidomide on ulcerative colitis, especially left-sided ulcerative colitis.
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