INCLUSION COMPLEX OF CYCLODEXTRIN AND INDOMETHACIN,ITS PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The invention relates to an inclusion complex of 1-(p-chloro-benzoyl)-5-methoxy-2-methyl-indol-3-yl-acetic acid (indomethacin) and cyclodextrin of a molar ratio of about 2:1. The inclusion complex can be prepared by reacting about 2 moles of alpha or beta cyclodextrin with about 1 mole of 1-(p-chloro-benzoyl)-5-methoxy-2-methyl-indol-3-yl-acetic acid under heating in the presence of an organic solvent which dissolves indomethacin and does not form a stable complex with cyclodextrin. The new complex is at least as active antiinflammatory agent as indomethacin and at the same time shows substantially less ulcerative side-effect.