PH INDEPENDENT FORMULATIONS OF 6-(5-CHLORO-2-PYRIDYL)-5-[(4-METHYL-1-PIPERAZINYL)CARBONYLOXY]-7-OXO-6,7-DIHYDRO-5H-PYRROLO[3,4-b]PYRAZINE

摘要

Pharmaceutical compositions of zopiclone [(6-(5-chloro-2-pyridyl)-5-[(4-methyl-1-piperazinyl)carbonyloxy]-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine)] that render the aqueous solubility/dissolution of the free base independent of the pH of the gastrointestinal tract are disclosed. The compositions are useful for oral administration.