Medrx Co., Ltd

Takahiro Tanimoto

Hidetoshi Hamamoto

Katsuhiro Yamanaka

Keiko Yamasaki

Yasushi Miwa

Naoya Akazawa

A non-aqueous patch preparation may include a drug solution in which a drug is dissolved in an organic solvent, a lipophilic mass base, and anhydrous silicic acid powders that are insoluble both in the organic solvent and in the lipophilic mass base. The organic solvent is selected from the group consisting of propylene glycol, 1,3-butanediol, polyethylene glycol, and propylene carbonate. The lipophilic mass base comprises an elastomer, a tackifier, and a softening agent wherein the elastomer is styrene-isoprene-styrene copolymer (SIS). The patch preparation has 2% to 10% by weight of the anhydrous silicic acid powders.

Composition for patch preparation comprising drug, organic solvent, lipophilic mass base, and powder

An object of the present invention is to provide a method for the treatment of a patient suffering from spasticity comprising administering to said patient a modified release dosage form comprising tizanidine or a pharmaceutically acceptable salt thereof. The present invention relates to a method of administering a transdermal patch preparation comprising tizanidine or a pharmaceutically acceptable salt thereof to a subject in need thereof, wherein the transdermal patch preparation releases about 4 mg to about 36 mg of tizanidine or a pharmaceutically acceptable salt thereof for at least about 24 hours.

Tizanidine therapy system

An object of the present invention is to provide a patch preparation having an excellent skin permeability of medicament using an acid additional salt of basic medicament. Provided is a patch preparation comprising a support and an adhesive layer on one surface of the support, wherein the adhesive layer contains a basic medicament, a fatty acid-based ionic liquid, and potassium salts and/or potassium ions. Said potassium salts and/or potassium ions are generated as a result of reaction of an acid addition salt of the basic medicament with a compound capable of generating potassium ion in the adhesive layer.

Patch preparation containing an acid scavenger

The present disclosure provides a composition for a non-aqueous patch preparation with excellent adhesibility which can sustainedly release a drug. The patch preparation can improve the adhesibility of the patch preparation and the release property of a drug by the addition of a powder ingredient the long-time sustention of the adhesibility of tape preparations enables an improvement of the transdermal absorbability and the sustained release of a drug.

The present invention provides a composition for a non-aqueous patch preparation having an excellent adhesibility which can sustainedly release a drug. The patch preparation of the present invention can improve the adhesibility thereof as well as the release property of a drug by the addition of powder ingredient (e.g. a filler). As a result, the long-time sustention of the adhesibility of patch preparations can achieve the improvement of the transdermal absorbability and the sustained release of a drug. By the use of a composition for a patch preparation comprising this powder ingredient, a drug, regardless of the type of a drug is dissolved in an organic solvent or an ionic liquid to prepare a drug solution comprising the organic solvent, the drug solution is incorporated into the non-aqueous patch preparation of the present invention, and thereby a preparation with the improved transdermal-absorbability and sustained release can prepared.

Base composition for tape agent

Disclosed is a transdermal composition, which uses high-purity phosphatidylcholine that is most susceptible to oxidation and the like, and which exhibits high stability and high migration into the skin. Specifically, a transdermal composition having good stability and migration into the skin is able to be obtained by preparing a transdermal composition (a colloidal dispersion liquid of phosphatidylcholine) that contains high-purity phosphatidylcholine, carnitine, a polyhydric alcohol and water. Since the transdermal composition does not contain an oleaginous base (an oil component), the transdermal composition has skin compatibility and is thus useful as a therapeutic agent or a cosmetic preparation. In addition, phosphatidylcholine and carnitine have an effect of achieving good migration into the skin and are capable of promoting systemic or local lipid metabolism in subcutaneous adipose tissues. Consequently, the transdermal composition is able to provide a transdermal preparation that is capable of promoting lipolysis in subcutaneous adipose tissues.

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Higashikagawa, Japan

Takahiro Tanimoto