Bretazenil (0.001-0.1 mg/kg intraperitoneally 10 min before metrazol; age 7, 12, 18, 25 and 90 days male and female albino rats)suppresses both types of metrazol-induced seizures, minimal (mMS, predominantly clonic with preserved righting ability) and major (MMS, generalized tonic-clonic) in a dose-dependent manner.