摘要:
An oral dosage form comprising a pharmaceutical tablet of one or more layers, one of which carries a biologically active substance; the formulation of said tablet includes different percentages of hydrophilic and lipophilic polymeric materials, and adjuvant substances. The tablets of the present invention show a release rate which is independent from the amounts of active substance present in the tablet.
摘要:
A new release system is disclosed for releasing one or more active substances vehicularised in it, at a predetermined rate and duration. The system is constituted by a pharmaceutical tablet, coated with a film of polymeric material impermeable and insoluble in aqueous fluids; on the coating film, one or more apertures of geometrically precise size and shape are made, through the use of a laser beam of appropriate power and intensity, in a way such that the active ingredient contained in the therapeutic system is released only from the non coated portion of the tablet surface at the desired rate and time. The technology for manufacturing such system is also described.
摘要:
Described herein is a particular type of pharmaceutical tablet, for oral use, which is formed by one or more layers, and is specifically designed for controlled release of active principles that present problems of bio-availability linked to absorption in the gastro-intestinal tract, and in particular active principles that present an erratic and unpredictable absorption linked to the presence or absence of food at the level of the stomach and/or of the first portion of the small intestine, the said pharmaceutical form being characterized in that it is completely coated with one or more films of a biocompatible and biodegradable polymeric material.
摘要:
Pharmaceutical tablet consisting of a first layer containing one or more drugs with immediate or controlled release formulation, a second layer containing one or more drugs, either equal to or different from the first layer, with slow release formulation, and a low-permeability barrier-type layer coating said second layer or, alternatively, placed between the first and second layer and, if necessary, containing a drug.
摘要:
Pharmaceutical tablet which consists of:a) a first layer having the property of swelling considerably and quickly on contact with aqueous biological fluids, the first layer being produced by compression of a mixture or of a granulate comprising hydrophilic polymers, andb) a second layer adjacent to the first layer being formulated with hydrophilic polymers and with other auxiliary substances in order to give the preparation suitable properties of compressibility and in order to allow the release of alfuzosin hydrochloride within a predetermined time period.
摘要:
Pharmaceutical tablet consisting of a first layer containing one or more drugs with immediate or controlled release formulation, a second layer containing one or more drugs, either equal to or different from the first layer, with slow release formulation, and a low-permeability barrier-type layer coating said second layer or, alternatively, placed between the first and second layer and, if necessary, containing a drug.
摘要:
A pharmaceutical tablet capable of releasing the active ingredients contained therein at subsequent times produced via the steps of: a) preparing a tablet consisting of three superposed layers, the upper layer containing an active ingredient, the intermediate layer not containing any active ingredient and forming a barrier-type layer, and the lower layer containing an active ingredient, said upper layer presenting a raised top, b) coating the tablet entirely with an impermeable polymeric film, and c) removing said raised top and thus allowing contact of the abraded upper layer surface with the environment.
摘要:
The present invention relates to a rapidly disintegrating orally administratable solid dosage formulation that includes at least one active ingredient, at least one first disintegration agent that is at least one type-C methacrylic acid copolymer according to the U.S. Pharmacopoeia National Formulary US/NF, a second disintegration agent of crospovidone or a cross-linked povidone polymer derivative thereof, and a non-cariogenic diluent that does not increase glucose blood levels. The at least one first disintegration agent does not function as an enteric coating, insulation coating intended to protect active ingredient(s), or coating intended to mask taste or smell. The solid dosage form has a mass of about 50 to about 1000 mg, and the at least one first disintegration agent is present in the dosage form in an amount not exceeding 15%, with respect to the total weight of the dosage form. The second disintegration agent is present in the dosage form in an amount not exceeding 15% with respect to the total weight of the dosage form. The first and the second disintegration agent are present in total amounts that provide a weight ratio of about 1:1 to about 1:3, wherein the dosage form provides at least one of the in vitro or in vivo disintegration time that is less than 30 seconds, and has a friability of 1% or less according to the U.S. Pharmacopoeia test.
摘要翻译:本发明涉及快速崩解的可口服给药的固体剂型制剂,其包含至少一种活性成分,至少一种第一崩解剂,其是根据US Pharmacopoeia National Formulary US / NF至少一种C型甲基丙烯酸共聚物, 交联聚维酮的第二崩解剂或其交联聚维酮聚合物衍生物和不增加葡萄糖血液水平的非致龋剂稀释剂。 至少一种第一崩解剂不用作肠溶衣,旨在保护活性成分的绝缘涂层或旨在掩蔽味道或气味的涂层。 相对于剂型的总重量,固体剂型具有约50至约1000mg的质量,并且至少一种第一崩解剂以不超过15%的量存在于剂型中。 相对于剂型的总重量,第二崩解剂以不超过15%的量存在于剂型中。 第一和第二崩解剂以提供重量比为约1:1至约1:3的总量存在,其中该剂型提供至少一种体外或体内崩解时间小于30 秒,根据美国药典测试,其脆度为1%以下。
摘要:
A pharmaceutical tablet capable of releasing the active ingredients contained therein at subsequent times produced via the steps of: a) preparing a tablet consisting of three superposed layers, the upper layer containing an active ingredient, the intermediate layer not containing any active ingredient and forming a barrier-type layer, and the lower layer containing an active ingredient, said upper layer presenting a raised top, b) coating the tablet entirely with an impermeable polymeric film, and c) removing said raised top and thus allowing contact of the abraded upper layer surface with the environment.
摘要:
Controlled release pharmaceutical tablet having a lenticular form consisting of three layers of which the central one or core (a) contains the active principle and the two outer layers or barriers (b) and (c) comprise gellable and/or erodible polymeric material, said barrier layers being equal or different among themselves for composition and/or thickness, while the central layer has a limited external annular surface exposed to the dissolution medium, through which the active principle is released.