Lorazepam
First-line IV benzodiazepine for fits lasting 5 minutes: 0.1 mg/kg (usually 4 mg), repeated once.
On this page
Dose
| Patient | Dose |
|---|---|
| Adult | 0.1 mg/kg IV (usually 4 mg), repeat once after 5–10 minutes |
| Child | 0.1 mg/kg IV (max 4 mg), repeat once |
Cautions
- Breathing depression and low BP; have airway support ready.
- Maximum two doses of benzodiazepine, then a second-line drug.
Frequently asked questions
How many doses of lorazepam can be given in status epilepticus?
Two doses, then move to a second-line antiepileptic.
Used in these guides
Sources
Doses on this page are typical doses from the sources above. Always confirm with a current drug reference, the product leaflet and your hospital protocol, especially in children, pregnancy and kidney or liver disease.
For FCPS Part 1
Revising for FCPS Part 1? Lorazepam is covered in our textbook chapter Antiepileptics and sedatives, with practice MCQs.