| abstract |
The object of the present invention is a sustained release injection drug, which is a medicament in the form of administration that can provide the action of 7- [4- (4-benzo [b] thiophen-4-ylpiperazin-1-yl) butoxy] -1H-quinoline-2-one over a long period of time, where the drug releases a therapeutically effective amount of 7- [4- (4-benzo [b] thiophene-4-ylpiperazin-1-yl) butoxy] -1H-quinoline-2- one for at least one week. The present invention provides an injectable preparation containing 7- [4- (4-benzo [b] thiophene-4-ylpiperazin-1-yl) butoxy] -1H-quinolin-2-one or its salt as an active ingredient, which releases the active ingredient so that its concentration in the blood persists for at least one week. |