Violent uterine contraction, leading to uterine rupture & extensive laceration of the soft tissue, fetal bradycardia, fetal arrhythmias, & fetal asphyxiation, & possible fetal or maternal death in high doses or when administered to hypersensitive patients. Maternal death due to severe HTN & subarachnoid haemorrhage. Postpartum haemorrhage & fatal afibrinogenaemia. Water retention leading to hyponatremia & intoxication, w/ pulmonary oedema, convulsions, coma, & death when given IV over prolonged periods. Vasopressin-like activity may occur. Anaphylactic & other hypersensitivity reactions, cardiac arrythmias, pelvic haematomas, nausea & vomiting. Acute transient hypotension, flushing & reflex tachycardia in rapid IV inj. Neonatal jaundice & retinal haemorrhage. Nasal irritation, rhinorrhoea, lachrymation, uterine bleeding, & violent uterine contractions following intranasal administration.