| http://www.w3.org/ns/prov#value | - It is preferred to use the solid anionic surface active agent in the form of a sodium salt. [0108] Compositions for rectal or vaginal administration are preferably suppositories which may be prepared by mixing the compounds of this invention with suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solids at room temperature but li
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