Den anbefalede dosis er 40 mg indgivet intravenøst (i. v.) eller intramuskulært (i. m.) efterfulgt af 20 mg eller 40 mg hver 6. til 12. time efter behov.
The recommended dose is 40 mg administered intravenously (IV) or intramuscularly (IM), followed every 6 to 12 hours by 20 mg or 40 mg as required, not to exceed 80 mg/ day.