1. mechanism of action
   1. CNS Depressant-
   2. raises seizure threshold
2. half-life--adults 2-6 days (long acting)
3. Contraindications
   1. Pre-existing CNS depression
4. Caution
   1. Hepatic dysfunction
5. Adverse and side effects
   1. -respiratory depression
   2. hypotension
6. Drug to drug
   1. other cns depressants (alcohol antihistimines)
   2. decreases effectiveness: BCP's warfarin, theophylline
   3. increase risk of hepatic toxicity--tylenol
7. Nursing Considerations
   1. monitor respiratory status
   2. assess seizure activity