Side effects from hydroxyzine may include:

dizziness, drowsiness, sleepiness, or confusion
blurred vision or a dry mouth
nausea or vomiting

Tell your doctor if any of these symptoms are severe or do not go away:

dry mouth, nose and throat
upset stomach
dizziness
chest congestion
headache
reddening of skin 

If you experience any of the following symptoms, call your doctor immediately:

difficulty breathing
muscle weakness
increased anxiety
 

However, it is strongly advised that you talk to your doctor about the possible risks of using this drug for your particular condition.

 

FDA Information

Why is this medication prescribed?

Other uses for this medicine

Dosage and using this medicine

What special precautions should I follow?

What should I do if I forget a dose?

What storage conditions are needed for this medicine?

In case of an emergency/overdose