In humans, blood levels obtained from umbilical cord blood indicate placental transfer of lorazepam and lorazepam glucuronide. PRECAUTIONS: Before taking lorazepam, tell your doctor or pharmacist if you are allergic to or to other benzodiazepines. It is most useful in those patients who are anxious about their surgical procedure and who would prefer to have diminished recall of the events of the day of surgery see PRECAUTIONS, Information for Patients. Keep the medication in secure place where others cannot get to it. Clinical circumstances, some of which may be more common in the elderly, such as hepatic or renal impairment, should be considered. Possible ativan til at kobe effects include insomnia, ringing in the ears, shaking, tremors, sweating, and nausea, depending on the dosage and length of use before withdrawal. The clinical significance of the above findings is not known.