Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using Norflex and call your doctor at once if you have:
a light-headed feeling, like you might pass out;
painful or difficult urination;
little or no urination;
confusion, anxiety, agitation, tremors, hallucinations; or
pounding heartbeats or fluttering in your chest.
Common side effects may include:
dizziness, drowsiness, weakness;
nausea, vomiting;
dry mouth; or
constipation.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
 Norflex side effects (more detail)
