- famotidine 20 mg PO BID
- haloperidol 15 mg IM q4h prn
- lithium carbonate 300 mg PO TID
- amoxicillin 500 mg PO q12h × 7 days
Number 2 is correct.
The typical dosage for haloperidol is 2 – 5 mg IM. This dose is three times the normal dose and should be questioned by the nurse. Options 1, 3, and 4 reflect average dosing ranges for those medications.