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:
A pharmaceutical preparation comprising: a) a core with an active ingredient and with an organic acid and/or the salt of an organic acid; and b) a coating which envelops the core and which comprises a polymer content of (meth)acrylate copolymers which have not more than 15% by weight of cationic or anionic groups, and which comprises at least 60% by weight of a (meth)acrylate copolymer which is composed of free-radically polymerized units of 93 to 98% by weight C1- to C4-alkyl esters of acrylic or of methacrylic acid and 7 to 2% by weight (meth)acrylate monomers having a quaternary ammonium group in the alkyl radical, wherein the active ingredient has a solubility in water of at least 10 g/l at 20° C. and the coating comprises silicon dioxide particles having an average particle size in the range from 1 to 50 μm.
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 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.
摘要:
The invention provides a gastric resistant, enteric-coated solid dosage form including a core containing a pharmaceutically active ingredient, an inner coating for the core, and an outer enteric coating. The inner coating comprises an anionic polymeric material or a water-soluble neutral polymeric material, and further comprises a water soluble inorganic salt which is not a carbonate or bicarbonates. The outer enteric coating comprises an anionic polymeric material which is less neutralized than the polymeric material comprising the inner coating and disintegrates rapidly at a pH of 5.5 to 7.0 upon entering the small intestine.