Abstract: It is intended to provide a method of producing a solid preparation disintegrating in the oral cavity characterized by comprising mixing fine subtilaes containing a medicinal ingredient with an additive containing ?-mannitol and tableting the mixture; and a solid preparation disintegrating in the oral cavity produced thereby. This solid preparation disintegrating in the oral cavity has such a strength (hardness) as suffering from no defect even under stresses in transporting, packaging with the use of an automated packaging machine, taking out from a PTP and soon.

Abstract: It is intended to provide a method of producing a solid preparation disintegrating in the oral cavity characterized by comprising mixing fine subtilaes containing a medicinal ingredient with an additive containing ?-mannitol and tableting the mixture; and a solid preparation disintegrating in the oral cavity produced thereby. This solid preparation disintegrating in the oral cavity has such a strength (hardness) as suffering from no defect even under stresses in transporting, packaging with the use of an automated packaging machine, taking out from a PTP and soon.

Abstract: This invention provides a method for producing a microparticle which comprises pulverizing a solid preparation comprising a compound represented by the formula: ##STR1## wherein ring A is an optionally substituted benzene ring; R is a hydrogen atom or an optionally substituted hydrocarbon group; B is an optionally esterified or amidated carboxyl group; X is --CH(OH)-- or --CO--; k is 0 or 1; and n is 0, 1 or 2 or a pharmaceutically acceptable salt thereof and a biodegradable polymer of .alpha.-hydroxycarboxylic acid in the presence of a pulverizing auxiliary, which can provide microparticles which are less adhesive and involve less aggregation and are thus excellent in drug entrapment ratio and control of drug-release in a desired particle size.

Abstract: A freeze-dried preparation comprising a bioactive substance having an optionally substituted amidino group and a disaccharide which stabilizes the bioactive substance; and a process for making the preparation are described.