摘要:
The present invention relates to a method for stabilizing rotigotine, the method comprising providing a solid dispersion comprising polyvinylpyrrolidone and a non-crystalline form of rotigotine, wherein the weight ratio of rotigotine to polyvinylpyrrolidone is in a range from about 9:3.5 to about 9:6. The present invention also relates to a solid dispersion comprising a dispersing agent and a dispersed phase, said dispersed phase comprising rotigotine and polyvinylpyrrolidone, wherein the weight ratio of rotigotine to polyvinylpyrrolidone is in a range from about 9:3.5 to about 9:6, a pharmaceutical composition comprising such a solid dispersion, in particular a transdermal therapeutic system, as well as a method for the preparation thereof.
摘要:
The present invention relates to a transdermal therapeutic system, comprising (a) a backing layer, (b) a solvent -based self-adhesive matrix layer containing rotigotine as active ingredient, and (c) a release liner, wherein the self- adhesive matrix layer has a coating weight of about 75-400 g/m 2 and comprises a reservoir layer containing about 9-25 wt.-% rotigotine based on the weight of the reservoir layer, a kit comprising two transdermal therapeutic systems of the present invention as well as a method for the preparation of the transdermal therapeutic system of the present invention. In addition, the present invention relates to a transdermal therapeutic system comprising rotigotine as active ingredient for use in the treatment of patients suffering from Parkinson's disease, Parkinson's plus syndrome, depression, fibromyalgia and the restless-legs syndrome and for use in the treatment or prevention of dopaminergic neuron loss or cognitive disorders by transdermal administration of rotigotine once or twice weekly, wherein the transdermal therapeutic system comprises a backing layer, a solvent -based rotigotine containing self-adhesive matrix layer as well as a release liner and is adapted to allow for the transdermal administration of therapeutically effective amounts of rotigotine for at least 3 days.
摘要:
The invention relates to a transdermal therapeutic system which comprises a back layer that is impermeable to the active substance, and a peelable protective layer that is impermeable to the active substance and at least one matrix layer consisting of polysiloxanes and/or polysiloxane derivatives and containing micro-reservoirs. Said micro-reservoirs contain at least one ion pair from a pharmacologically active substance and an additive and either the active substance is nucleophilic and the additive is electrophilic or the active substance is electrophilic and the additive is nucleophilic.
摘要:
The invention relates to a transdermal therapeutic system (TTS) comprising at least one pharmacological active substance, which is suitable for heating up to a temperature above skin temperature, thereby promoting the permeation rate of the active substance. The transdermal therapeutic system comprises at least one layer containing the active substance and one peelable backing layer, and is characterized in that the layer containing the active substance mainly consists of a polysiloxane in which the active substance is partially dissolved.
摘要:
Topical patch containing capsaicin or a capsaicin analog, process for its preparation and its use. The invention relates to a topical patch comprising a therapeutic compound-impermeable backing layer, a self-adhesive matrix based on polysiloxanes and containing capsaicin or a therapeutic compound analogous to capsaicin, and a protective film to be removed before use, in which the matrix contains liquid microreservoirs based on an amphiphilic solvent, in which the therapeutic compound is present in completely dissolved form and the concentration of the therapeutic compound in the microreservoir droplets is below the saturation concentration. The invention furthermore relates to a process for its production and its use in the treatment of neuropathic pain.
摘要:
The invention relates to a transdermal therapeutic system (TTS) comprising at least one pharmacological active substance, which is suitable for heating up to a temperature above skin temperature, thereby promoting the permeation rate of the active substance. The transdermal therapeutic system comprises at least one layer containing the active substance and one peelable backing layer, and is characterized in that the layer containing the active substance mainly consists of a polysiloxane in which the active substance is partially dissolved.
摘要:
A transdermal therapeutic system with a layered construction consisting of a backing layer (1) and at least one matrix layer (2) containing an active agent, laid for storage purposes on a releasable protective layer (4) coated with a release agent (3), in which the release agent (3) has a lower coefficient of diffusion for the active agent used than the basic materials used in the matrix layer(s) (2).
摘要:
The invention relates to a transdermal therapeutic system (TTS), comprising a backing layer, which is permeable to the active ingredient, at least one matrix layer, comprising fentanyl or an active agent analogous to fentanyl, based on polyacrylate and a protective layer to be removed before usage, characterised in that the polyacrylate polymer is self-adhesive, free of carboxyl groups, has a saturation solubility for fentanyl of 3 to 20 wt. %, preferably of 4 to 12 and particularly of 5 to 10 wt. % and the layers contain at least 80 % of the included active ingredient in a molecularly-dispersed, dissolved form.