The invention relates to a transdermal therapeutic system for administering the active substance buprenorphine. Said system comprises at least one carboxylic acid that determines the solubility of buprenorphine in the matrix layer and that can likewise be absorbed. The transdermal therapeutic system according to the invention is used in the treatment of pain and characterized by a considerably increased utilization of the active substance.

A patch including: a support; and an adhesive layer disposed on at least one surface of the support, in which the adhesive layer includes: at least one selected from the group consisting of butorphanol and pharmaceutically acceptable salts thereof; a higher aliphatic alcohol; and a non-cross-linking polyvinylpyrrolidone that does not contain vinyl acetate as a constituent monomer thereof.

A transdermal therapeutic system for administering at least one active pharmaceutical ingredient, including a polymer-based layer which is remote from the skin with a rate of application of at least 80 g/m.sup.2, and an adhesive skin-contact layer which is adjacent to the polymer-based layer remote from the skin and is based on acrylate copolymers with a rate of application of not more than 50 g/m.sup.2. The at least one active pharmaceutical ingredient is present in both the polymer-based layer remote from the skin and the skin-contact layer.

The invention provides a patch and a patch preparation having an adhesive layer with a high adhesive force, wherein the hydrophobic adhesive layer does not bloom even when an organic fluid component having high polarity is contained therein. The patch contains a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer contains a synthetic rubber having a viscosity average molecular weight of 500,000-1,600,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate. In the patch preparation, the above-mentioned adhesive layer further contains a drug.

The objective of the present invention is to provide a local anesthetic agent-containing patch having a skin permeability, cohesion force and adhesive property practical as a pharmaceutical product. The patch of the present invention is characterized in comprising a backing layer, and an adhesive layer on the backing layer, wherein the adhesive layer comprises at least a local anesthetic agent, a thermoplastic elastomer, a higher fatty acid ester, and a polyol fatty acid monoester, and a ratio of the higher fatty acid ester to 100 mass parts of the thermoplastic elastomer is 25 mass parts or more and 200 mass parts or less.

A preparation for percutaneous absorption contains a drug-containing matrix layer having a single-layered structure, in which a high dose of donepezil or a pharmaceutically acceptable salt thereof is contained in an amount of 10 to 20 wt % with respect to the total weight of the drug-containing matrix layer, thereby reducing the size of a formulation. The single-layered structure of the preparation allows for easy preparation at a production site and reduced manufacturing costs compared to preparations for percutaneous absorption having multi-layered structures. In addition, despite the high dose of donepezil contained in the preparation, no crystallization of donepezil occurs even during long-term storage, and the preparation continuously exhibits high skin permeability for a long period of time. Above all, due to a high drug dose per unit area, the size of a formulation is reduced compared to that of conventional formulations, and thus patient medication compliance can be remarkably increased.

Disclosed is a patch containing a plaster having fentanyl, an adhesive, a volatile hydrocarbon solvent (A), and a heteroatom-containing volatile organic solvent (B).

Provided herein are transdermal delivery devices comprising ketamine, such as monolithic transdermal patches. Also provided herein are methods of preparing transdermal delivery devices. The transdermal delivery device and monolithic patch herein can have various uses, for example, for treating various diseases or disorders, such as depression, anxiety, and/or pain in a subject in need thereof.

To provide a phosphatidylcholine transdermal absorption preparation containing phosphatidylcholine in an adhesive layer. A phosphatidylcholine transdermal absorption preparation has a configuration in which an adhesive layer formed on at least one side of a support contains phosphatidylcholine, an adhesive component, and a lipophilic component, and thus the preparation becomes a patch-type transdermal absorption preparation which acts as a fat-decreasing agent which contains phosphatidylcholine and can exert an effect that local obesity such as subcutaneous fat is dissolved and fat is decreased by transdermal absorption of phosphatidylcholine as the preparation is pasted to the skin of a human body since phosphatidylcholine can be stably present in the adhesive layer and has an advantage due to the patch dosage form that the preparation can be fixed to the affected area and is more favorably handled as compared to liquid preparations and the like.

The present invention is directed to a transdermal delivery device comprising ketamine and formulations thereof. The present invention is also directed to a transdermal delivery device comprising ketamine for the treatment of major depressive disorder (MDD) and/or pain. The present invention is further directed to a transdermal delivery device comprising ketamine and abuse deterrent agents.