Table 1.

Examples of Drug Alert Contraindications

Contraindication	Example
Duplicate drug class	A clinician orders captopril, and lisinopril is already on the patient's medication list.
	A clinician orders diazepam, and lorazepam is already on the patient's medication list.
Drug-drug	A clinician orders isocarboxazid, and meperidine is already on the patient's medication list.
	A clinician orders sildenafil, and nitroglycerin is already on the patient's medication list.
Drug-lab	A clinician orders metformin, and the patient's creatinine is >1.4 mg/dL.
	A clinician orders hydrochlorothiazide, and the patient's potassium is < 3.0 mEq/L.
Drug-disease	A clinician orders sumatriptan, and coronary artery disease is on the patient's problem list.
	A clinician orders lovastatin, and hepatic disease is on the patient's problem list.
Drug-pregnancy	A clinician orders isotretinoin, and the patient has a positive pregnancy test within the past nine months.
	A clinician orders warfarin, and the patient has a positive pregnancy test within the past nine months.