Abstract: Compositions which contain active substances and are in the form of solid particles can be obtained by intimately mixing the active substance with a water-soluble melt composed ofa) 10-90% by weight of a water-soluble polymer A with a viscosity V.sub.a of 1,000-120,000 cps andb) 10-90% by weight of a water-soluble polymer B with a viscosity V.sub.b of 1-500 cpsas carrier substance, where the viscosities V.sub.a and V.sub.b are those of a 2% by weight aqueous solution at 20.degree. C., measured by the ASTM D 2363-72 capillary method (European Pharmacopoeia, Vol. III, p. 37), and processing the melt with shaping to give the particles.

Abstract: A process with whose aid active substances of low solubility can be processed together with phospholipids to give a homogeneous solution, which comprisesa) mixing the active substance with a phospholipid,b) adding an acidic aqueous solution of a carbohydrate to the residue at elevated temperature, and stirring this mixture at elevated temperature until a homogeneous colloidal solution is produced, andc) cooling the solution, and adjusting to a pH of 4-5 and sterilizing is described.

Abstract: A process for preparing an aqueous active substance solution which can be sterilized by filtration entails mixing anipamil hydrochloride with a phospholipid in the ratio of from 1:2 to 2:1 by weight, converting the resulting mixture into a gel by adding water at elevated temperature, and subsequently adding water to the gel at elevated temperature until the active substance is present in the required concentration.

Abstract: .alpha.-Aminocarboxylic acid derivatives of the formula: ##STR1## where n, X, Y and Z have the meanings stated in the description, and their preparation are described. The compounds are used in a method for improving delivery and reducing toxicity of biologically active substances by encapsulation of the biologically active substance with the above compounds.

Abstract: A process is described for the production of solid forms of active substances, which forms have good redispersibility in aqueous systems, which comprises mixing PEG and dextran with water and--if phase separation occurs--removing the upper phase, dissolving an active substance in the mixture, where appropriate adding a physiologically tolerated amphiphile, and subsequently removing the water.

Abstract: Hydroxypropafenone glycerides of the formula I ##STR1## where R is n-propyl or 1,1-dimethylpropyl,x is 2 or 3,y is 12, 14, 16, 18 or 20, anda and b differ from one another and are 0 or 1,as well as the stereoisomers thereof and the preparation thereof are described. The compounds are suitable as active substances for antiarrhythmics.