Abstract: A process for preparing pharmaceutical micro-tablets comprises (a) preparing a tableting mix that comprises an ACE inhibitor, for example moexipril hydrochloride, and excipient ingredients that comprise one or more lubricants; and (b) compressing the tableting mix in a tablet press, to form micro-tablets having an average uncoated weight of about 1 to about 40 mg; wherein the process employs means for promoting release of the mirco-tablets from the tablet press, said release promoting means being unnecessary for otherwise similar standard tablets having an average uncoated weight greater than about 50 mg. A plurality of micro-tablets thus prepared, collectively comprising a therapeutically effective amount of the ACE inhibitor, can be filled into a pharmaceutically acceptable capsule shell to provide a dosage form.

Abstract: A commercially useful material is produced from waste gypsum boards containing calcium sulfate dihydrate, by a method comprising the steps of (a) grinding the waste gypsum boards to obtain particles having a substantially uniform size; (b) drying the particles obtained in step (a) to obtain moisture-free particles; (c) heating the moisture-free particles obtained in step (b) at a temperature of 128 to 162.degree. C. to convert the calcium sulfate dihydrate to calcium sulfate hemihydrate; (d) adding water to the particles obtained in step (c) to form a paste; (e) forming the paste obtained in step (d) into a shaped product of a predetermined size; and (f) drying the shaped product obtained in step (e) at a temperature of 105 to 120.degree. C. to obtain a commercially useful material. The materials produced by the method of the invention can be used for a variety of industrial and household purposes.