<qa>  What is the name of the sterile powder of polysaccharides isolated from theAstragalus membranaceus AM is used to treat stroke for a long time, and a number of studies have shown that AM can reduce cerebral infarction area and has anti-oxidation activity. PG2, a sterile powder of polysaccharides isolated from the root of astragulus Huang-Chi for intravenous injection, has been approved as a botanical drug by TFDA. Hemorrhagic stroke will induce secondary peri-blood clot edema and that may increase intracranial pressure to exacerbate clinical symptom. Therefore, the purpose of the present study was to investigate the efficacy of PG2 on hemorrhagic stroke. 