摘要:
The invention relates to novel particulate drug-delivery systems based on a polymer support containing at least one linear, branched or cross-linked polymer in a fraction of over 50 percent by weight in relation to the total weight of the support. The system is characterised in that at least one signal substance for transport through a biological barrier and at least one active ingredient are stored, the support, signal substance and active ingredient having no covalent links and no active-ingredient specific and signal substance specific coordinative links between one another.
摘要:
The invention relates to methods for producing drugs having a stable profile for the release of active ingredients, said drugs exhibiting a controlled release characteristic as a result of the coating of vinyl (co)polymers. The inventive methods are characterised in that the coated drugs are conditioned in a fluidised bed coating appliance or a drum coating appliance for at least 10 minutes until a stable profile for the release of active ingredients is reached at a temperature of between 30 and 70° C. A humidity of between 5 and 30% is regulated during the conditioning process.
摘要:
The invention relates to a method for producing an oral form of administration which decomposes immediately and releases active ingredients in the mouth. According to said method, (a) an anionic pharmaceutical active ingredient is intensively mixed with (b) a copolymer consisting of radically polymerized C1-C4 esters of the acrylic acid or methacrylic acid and other (meth)acrylate monomers containing functional tertiary amino groups, and (c) between 5 and 50 wt. %, in relation to (b), of a C12-C22 carboxylic acid in the melted mass; the mixture is solidified and ground to form a powder containing active ingredients having an average particle size of 200 μm or less; and the powder is encapsulated in a water-soluble matrix consisting of pharmaceutically standard adjuvants, on the condition that no more than 3 wt. %, in relation to the copolymer, of emulsifiers with an HLB value of at least 14 must be contained therein. The invention also relates to the powder containing active ingredients and the uses of the same.
摘要:
The invention relates to a process for the preparation of cephalexin with the aid of a penicillin amidase immobilized on a crosslinked hydrophilic copolymer which has binding activity for ligands having nucleophilic groups and is in bead form.
摘要:
The invention relates to a pharmaceutical preparation consisting of: (a) a core containing an active substance, optionally an excipient and common pharmaceutical additives in addition to the salt of an inorganic acid whose proportion in the weight of the core ranges from 2.5 to 97% by weight and (b) and outer film coating consisting of one or more (meth)acrylate copolymers and optionally common pharmaceutical adjuvants, wherein 40 to 100% by weight of the (meth)acrylate copolymers consist of 93 to 98% by weight of radically polymerized C1- to C4-alkylesters of acrylic or methacrylic acid and 7 to 2% by weight of (meth)acrylate monomers with a quaternary ammonium group in the alkyl radical and that may be optionally present in a mixture consisting of 1 to 60% by weight of one or more additional (meth)acrylate copolymers different from the above-mentioned (meth)acrylate copolymers, consisting of 85 to 100% by weight of a radically polymerized C1- to C4-alkylesters of acrylic orethacrylic acid and optionally and optionally up to 15% by weight of additional (meth)acrylate monomers with basic groups or acid groups in the alkyl radical.
摘要:
The invention relates to a multiparticulate drug form suitable for uniform release of an active pharmaceutical ingredient in the small intestine and in the large intestine, comprising at least two forms of pellets A and B which comprise an active pharmaceutical ingredient in the core and have different polymer coatings which determine the release of the active ingredient at different pH values, characterized in that pellet form A is provided with an inner polymer coating which enables continuous release of active ingredient, and has an outer enteric coating which rapidly dissolves above about pH 5.5, and pellet form B is provided with a polymer coating which, in the USP release test, releases less than 20% of the active ingredient at pH 6.8 in 6 hours and releases more than 50% of the active ingredient at pH 7.2 in 6 hours. The invention additionally relates to a process for producing the multiparticulate drug form and to the use of pellet forms A and B for producing the drug form.
摘要:
The invention relates to a method for the production of a coating and excipient agent for oral or dermal dosage forms, consisting of (a) 35-98% by weight of a copolymer consisting of radically polymerized C1-C4 esters of acrylic or methacrylic acid and additional (meth)acrylate monomers having functional tertiary ammonium groups and (b) 1-50% by weight of a softener and 1-15% by weight of an emulgator with an HLB value of less than 14, wherein constituents (a), (b) and (c) are mixed with or without adding water and optionally adding a pharmaceutical active substance and other conventional additives and the coating and excipient agent is produced by melting, casting, spreading or spraying. The invention is characterized in that the copolymer (a) is applied in powder form with a mean particle size of 1-40 &mgr;m.
摘要:
A time-release laminar pharmaceutical composition, comprised of rolled or folded layers of a polymer film, that contain a pharmaceutically active substance, in which the outer surface area of the polymer film which contains the active substance, and which is accessible to the digestive juices, amounts to at most 25% of the entire surface area in the rolled or folded state, and the rolled or folded layers adhere to one another in such a way that the laminar form of medication maintains its rolled or folded form for a period of at least one hour in the release test according to USP 23, Method A, apparatus 2, at 37° C. and 50 rpm, in artificial gastric juice, and at least 30% of the active substance contained in it is released in the rolled or folded state.
摘要:
A water-soluble salt of a copolymer containing a monoethylenically unsaturated monomer containing amino groups that can be radically polymerized and at least one alkyl ester of acrylic and/or methacrylic acid, is used as a flexible pressure-sensitive adhesive for application to the skin.
摘要:
The invention relates to a wound covering made from a polysaccharide base, particularly cellulose, which is formed as a fabric, which has a high absorbency due to its sponge-like structure and contains non-immobilized enzymes for wound therapy.