Inclusion Criteria:  primigravida singleton pregnancy termgestation (37-42 weeks) sure reliable dated vertex presentation , occipito-anterior position regular uterine contractions at every 5 minutes,each lasting for 20 seconds cervical dilatation of 5 cm with or without rupture of membrane no evidence of maternal or fetal distress  Exclusion Criteria:  chorioamnionitis scarred uterus e.g. myomectomy cephalopelvic dispropotion history of cervical surgery or injury hypersensitivity to metoclopramide