Astellas Pharma Gmbh

Hiroaki Tasaki

Atsushi Sakurai

Hiroyuki Kojima

Takayuki Yoshida

Atsushi Maeda

Makoto Murai

Mitsuru Yoshida

Tetsuya Tamura

Seiji Takae

Ryota Azuma

Tatsunobu Yoshioka

Atsushi Muro

Masataka Katsuma

Daisuke Tsunashima

Provided is a pharmaceutical composition, which comprises 5-{[(3R)-1-acryloylpyrrolidin-3-yl]oxy}-6-ethyl-3-({4-[4-(4-methylpiperazin-1-yl)piperidin-1-yl]phenyl}amino)-pyrazine-2-carboxamide (hereinafter referred to as 'compound A') or a pharmaceutically acceptable salt thereof, and is stabilized. The pharmaceutical composition comprises compound A or a pharmaceutically acceptable salt thereof, and a pharmaceutical additive having a difference in water activity value of 0.1 or more, and is stabilized.

Stabilized pharmaceutical composition

Disclosed is a pharmaceutical composition comprising a complex between solifenacin or a pharmaceutically acceptable salt thereof and an ion exchange resin, and an acrylic based polymer.

Pharmaceutical composition comprising solifenacin

A pharmaceutical composition containing, as the active ingredient, 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide, of which the solubility in an acidic pH region is different from that in a neutral pH region, with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance, is provided. The pharmaceutical composition for oral administration of the present invention contains 4-{[(1R,2s,3S,5s,7s)-5-hydroxy-2-adamantyl]amino}-1H-pyrrolo[2,3-b]pyridine-5-carboxamide or a pharmaceutically acceptable salt thereof, and a hydrophilic lubricant, and is useful as a pharmaceutical composition for oral administration with rapid disintegration property and rapid drug dissolution property as well as the expectation of a good drug dosing compliance.

Pharmaceutical composition for oral administration

The present invention relates to an oral pharmaceutical composition in particle form, which comprises particles that contain a drug at the core of the pharmaceutical composition in particle form; a middle layer that contains two types of water-soluble components, an insolubilizer and an insolubilizing substance; and an outer layer for controlling water penetration that contains a water-insoluble substance. The present invention makes it possible to provide a pharmaceutical composition in particle form for oral use with which initial drug release is suppressed, the drug is quickly released thereafter, and lag time can be controlled as needed, and fast-disintegrating tablets containing this composition.

Oral pharmaceutical compositions in timed-release particle form and fast-disintegrating tablets containing this composition

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Tokyo, Japan

Hiroaki Tasaki