Table 2.

Some drugs that may decrease blood pressure or exacerbate orthostatic hypotension

CLASS	EXAMPLES
Narcotics	Morphine
Tricyclic antidepressants	Imipramine (Tofranil)
Nontricyclic antidepressants	Trazodone (Desyrel), paroxetine (Paxil), venlafaxine (Effexor)
Monoamine oxidase inhibitors	Phenelzine (Nardil)
Neuroleptics	Chlorpromazine (Thorazine), quetiapine (Seroquel)
Antihypertensive agents	Clonidine (Catapres), labetalol (Normodyne, Trandate), verapamil (Calan, Isoptin, Verelan), captopril (Capoten), hydralazine (Apresoline)
Nitrates
Diuretics	Furosemide (Lasix)
Antiparkinsonian agents	Levodopa (Sinemet), bromocriptine (Parlodel), ropinirole (Requip), pramipexole (Mirapex)
Drugs for prostatism	Prazosin (Minipress), terazosin (Hytrin)
Drugs for erectile dysfunction	Sildenafil (Viagra)
Drugs that induce autonomicneuropathy	Amiodarone (Cordarone, Pacerone), vincristine (Oncovin, Vincasar), cisplatin (Platinol)
Insulin (in diabetic patients with autonomic failure)