Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), more depressed, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have:
uncontrolled muscle movements in your face (chewing, lip smacking, frowning, tongue movement, blinking or eye movement);
mask-like appearance of the face, trouble swallowing, problems with speech;
a light-headed feeling, like you might pass out;
severe constipation;
painful or difficult urination;
blurred vision, tunnel vision, eye pain, or seeing halos around lights;
severe nervous system reaction--very stiff (rigid) muscles, high fever, sweating, confusion, fast or uneven heartbeats, tremors, fainting;
high blood sugar--increased thirst, increased urination, dry mouth, fruity breath odor; or
low white blood cell counts--fever, chills, mouth sores, skin sores, sore throat, cough, trouble breathing, feeling light-headed.
Common side effects may include:
speech problems;
dizziness, drowsiness, tiredness;
lack of energy;
fast heartbeats;
stuffy nose;
increased appetite, weight gain;
upset stomach, vomiting, constipation;
dry mouth; or
problems moving.
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.
 Quetiapine side effects (more detail)
