摘要:
The invention concerns microcapsules with prolonged release of active principles with low solubility, consisting of a core containing the active principle and coated with a polymer layer which controls the release of the active principle. The aim is that said oral microcapsules containing hardly soluble active principles should have a coating film of sufficient thickness to ensure controlled permeability and should be adapted to industrial reproduction. This is achieved by the inventive microcapsules of mean diameter less than 1000 microns, and whereof the coating film contains a film-forming polymer (P1) insoluble in gastrointestinal tract fluids, a water-soluble polymer (P2), a plasticizer (PL), and optionally a lubricating surfactant (TA). Said microcapsules are characterized in that their coating films represents at least 3% p/p of dry matter, relative to their total weight and their core contains a hardly soluble active principle and a solubilizing agent (polyoxyethylene hydrogenated castor oil) which provides the core wherein it is contained with properties such that the behaviour of the exposed core (non-coated) in a given dissolving test (TD), is as follows: release of 80% of active principle in less than two hours. The invention also concerns the use of such microcapsules in galenic formulation.
摘要:
The present invention also relates to carvedilol free base, carvedilol salts, anhydrous forms, or solvates thereof, corresponding pharmaceutical compositions or controlled release formulations, and delivery or dosing methods of carvedilol forms to the lower gastrointestingal tract or methods to treat cardiovascular diseases, which may include, but are not limited to hypertension, congestive heart failure, atherosclerosis, and angina. The present invention relates to controlled release formulations, which comprise various carvedilol forms, which may include, but are not limited to a carvedilol free base or corresponding carvedilol salts, anhydrous forms or solvates thereof.
摘要:
The invention relates to solid microparticulate oral dosage forms having a composition that prevents the misuse of the active pharmaceutical ingredient (API) contained therein. The aim of the invention is to prevent the improper use of solid oral drugs for any use other than the therapeutic use(s) officially approved by the appropriate public health authorities. Another aim of the invention is to provide novel analgesic drugs which can be used to: prevent the misuse of, and addiction to certain analgesics and/or to control plasma concentration variability and/or to facilitate oral; administration; and/or to combine analgesics with one another and/or with one or more active ingredients in the same oral form. More specifically, the invention relates to a solid oral drug form comprising anti-misuse means and at least one active ingredient, which is characterized in that: at least part of the active ingredient is contained in microparticles; and the anti-misuse means comprise anti-crushing means (a) which enable the microparticles of the active ingredient to resist crushing, such as to prevent the misuse thereof. According to the invention, the drug form can also comprise means (b) for preventing the misuse of the active ingredient following a possible liquid extraction process.
摘要:
The present invention relates to novel pharmaceutical formulations for the release of an active principle (AP) over a sustained period of time of several days, or even several weeks.The invention relates, in a first aspect, to a liquid formulation comprising at least one active principle (AP) and an aqueous suspension based on colloïdal particles of a polymer (PO), wherein said formulation satisfies the following four conditions:(a) the polymer (PO) is a polyamino acid comprising glutamic residues, wherein some glutamic residues each carry a pendant cationic group (CG), said cationic groups being identical or different from one another, and other glutamic residues each carry a pendent hydrophobic group (GH), said hydrophobic groups (GH) being identical or different from one another, (b) the pHf value of the pH of said formulation is between 3.0 and 6.5; (c) at the pHf value, the polymer (PO) forms a colloïdal solution which associates spontaneously and noncovalently with the active principle (AP); (d) 1 ml of said formulation precipitates during mixing with a volume of 1 ml of a test buffer solution Tp. The invention also relates to a process for the preparation of such formulations and to a process for the preparation of medicaments including such formulations.
摘要:
The invention relates to a microparticulate system for the delayed and controlled release of active principles (AP) whose absorption window in vivo is essentially limited to the upper parts of the gastrointestinal tract, this system being intended for oral administration. The object of the invention is to provide a system ensuring that the AP is released with certainty by means of a dual mechanism of “time-dependent” and “pH-dependent” release. To achieve this object, the invention proposes a multimicrocapsular oral galenical form which is designed so as to guarantee therapeutic efficacy, and in which the release of the AP is governed by a dual release triggering mechanism that is “time-triggering” and “pH-triggering”. This system consists of microcapsules (200 to 600 μm) comprising a core of AP coated with a film (maximum 40% by weight) comprising a hydrophilic polymer A (Eudragit® L) and a hydrophobic compound B (vegetable wax, melting point=40-90° C.), B/A being between 0.2 and 1.5. These microcapsules have a dissolution behavior in vitro such that, at a constant pH of 1.4, a latency phase of between 1 and 5 hours is observed, followed by a release of the AP, and such that the change from pH 1.4 to pH 6.8 results in a release of the AP without a latency period in vitro.
摘要:
Nonlinearly optically active monomer species comprising at least two carbon-carbon activated double bonds, i.e., the polymerization of which is facilitated by the presence of an electron attracting function, and a non-centrosymmetric system of pi (.pi.) conjugated bonds bearing at least one electron attracting group on one terminal thereof and at least one electron donor group on the other terminal, are readily (co)polymerized and optionally oriented and crosslinked into shaped articles well adopted for the manufacture of a variety of electrooptical devices; such monomer species can have, for example, the following structural formula (I): ##STR1##
摘要:
The field of the invention is that of oral pharmaceutical medicinal products or compositions, more particularly of the type of those comprising one or more active principles.The aim of the invention is to provide an improved oral medicinal product that can be administered in one or more daily doses, with modified release of active principle (in particular an active principle), for improving the prophylactic and therapeutic efficacy of such a medicinal product.This aim is achieved by means of the multimicrocapsular oral pharmaceutical form according to the invention in which the release of the AP is controlled by means of a double mechanism of triggering the release: “time triggering” and “pH triggering”. This medicinal product comprises microcapsules with modified release of active principle, each containing a core comprising the active principle and one or more swelling agents, and at least one coating making possible the modified release of the active principle.
摘要:
The present invention relates to pharmaceutical formulations for the release of an active principle (AP) over a sustained period of time. The invention relates to a liquid formulation comprising at least one active principle (AP) and an aqueous suspension based on colloidal particles of a polymer (PO), wherein said formulation satisfies the following four conditions: (a) the PO is a polyamino acid comprising glutamic residues, wherein some glutamic residues each carry a pendant cationic group (CG), said CG being identical or different from one another, and other glutamic residues each carry a pendent hydrophobic group (GH), said GH being identical or different from one another, (b) the pHf value of the pH of said formulation is between 3.0 and 6.5; (c) at the pHf value, the PO forms a colloidal solution which associates spontaneously and noncovalently with the AP; (d) 1 ml of said formulation precipitates during mixing with a volume of 1 ml of a test buffer solution Tp.
摘要:
The invention concerns an oral galenic form for prolonged release of anti-hyperglycaemic (metformin) active principles. Said medicine enables to obtain an efficient therapeutic protection over 24 hours by overcoming the problems of bypass of the absorption window and the massive localised release of active principles. Therefor, said medicine comprises several thousand anti-hyperglycaemic (metformin) microcapsules each consisting of a core comprising at least an anti-hyperglycaemic agent and of a coating film applied on the core and enabling the prolonged release in vivo of the anti-hyperglycaemic agent. Said microcapsules have a grain size distribution ranging between 50 and 100 microns. The reproducibility of the transit kinetics and hence of bioavailability are very high. There results for the patient a lesser risk of hyperglycaemic or hypoglycaemic. The invention also concerns the preparation of said medicine and the use of a plurality of said microcapsules for making an anti-hyperglycaemic medicine. The invention is applicable to the treatment of type II diabetes.
摘要:
The invention relates to oral antibiotic drugs. The object of the invention is to limit or even stop the increase in antibiotic resistance without sacrificing the requirements of (a) increased efficacy of oral antibiotics, particularly for pediatric applications, (b) tolerance, (c) broad spectra of activity, and (d) good patient compliance. This object is achieved by the invention, which proposes the use of modified-release microcapsules, comprising a core that contains at least one active principle AP1 formed of at least one antibiotic, and a coating for said core that governs the modified release of said active principle, for the manufacture of a drinkable or orally dispersible antibiotic pharmaceutical formulation that makes it possible to limit the increase in the antibiotic resistance of the target germs, this formulation being: capable of administration in one or two, preferably two, intakes per day, and definable as follows, relative to an immediate-release oral formulation (IRF*) comprising at least one active principle API, and for the same dose D of API as IRF*: Tmic>T*micof IRF*
摘要翻译:本发明涉及口服抗生素药物。 本发明的目的是限制或甚至阻止抗生素耐药性的增加,而不会牺牲(a)口服抗生素的功效增加,特别是儿科应用的要求,(b)耐受性,(c)活性的广谱谱和( d)良好的患者依从性。 该目的是通过本发明来实现的,本发明提出使用包含至少一种由至少一种抗生素形成的至少一种活性成分AP1的芯的改性释放微胶囊和用于所述核心的涂层,所述涂层控制所述活性物质的修饰释放 原理,用于制造可以限制目标细菌的抗生素抗性增加的可饮用或口服分散的抗生素药物制剂,该制剂是:能够每天摄入一次或两次,优选两次, 并且可定义如下,相对于包含至少一种活性成分API的立即释放口服制剂(IRF *),和与IRF *相同的API剂量D:<?in-line-formula description =“In-line IRF *的公式“end =”lead“?> T SUB >> T * SUB>在线公式描述=”在线公式“end =” 尾巴“?>