Get emergency medical help if you have signs of an allergic reaction to Intuniv: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
anxiety, nervousness;
hallucinations (especially in children);
severe drowsiness;
slow heartbeats; or
a light-headed feeling, like you might pass out;
If you stop taking Intuniv, tell your doctor if you have headaches, confusion, rapid heartbeats, tremors, increased blood pressure, or if you feel nervous or agitated. If left untreated, these symptoms could lead to very high blood pressure, vision problems, or seizures.
Common Intuniv side effects may include:
dizziness, drowsiness;
low blood pressure, slow heartbeats;
feeling tired or irritable;
trouble sleeping;
dry mouth; or
stomach pain, nausea, constipation.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Intuniv side effects (more detail)
