Combining with pseudoephedrine or other sympathomimetics can lead to severe peripheral vasoconstriction, ventricular tachycardia, seizures, and possibly death [Burns2002];
Drug-drug interactions with antihypertensives and antipsychotics [Mathys2004];
Patients unresponsive to levodopa are poor candidates for bromocriptine therapy [RXLIST-Parlodel];