oil, oily esters such as glycerine, propylene glycol, or ethyl alcohol; preservatives, for example methyl or propyl p-hydroxybenzoate or sorbic acid, and, if desired, conventional flavouring or colouring agents. [0089] Suppositories will contain conventional suppository bases, e.g. cocoa-butter or other glyceride. [0090] For parenteral administration, fluid unit dosage forms are prepared utilizing