Hydroxyzine pamoate side effects?

Hydroxyzine pamoate (Vistaril) is an antihistamine used for anxiety, tension, and itching. Common and more serious side effects are listed below. Individual experience varies.

Common side effects (these are most likely):
- Drowsiness or sleepiness
- Dry mouth
- Dizziness or lightheadedness
- Headache
- Blurred vision
- Constipation or upset stomach
- Fatigue

Less common but possible:
- Confusion or memory problems (especially in older adults)
- Urinary retention
- Dry eyes
- Palpitations or a fast heartbeat
- Sensitivity to sunlight (photosensitivity)

Serious side effects (seek urgent medical attention):
- Signs of an allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing
- Severe drowsiness or confusion that doesn’t improve
- Chest pain, severe shortness of breath, fainting
- Seizures (rare)

Important safety notes:
- Avoid or limit alcohol and other sedatives (could enhance drowsiness)
- May impair your ability to drive or operate machinery until you know how it affects you
- Can interact with other medicines (your doctor or pharmacist can check for interactions, especially with sedatives, antidepressants, anticholinergic drugs, or other CNS depressants)
- Use with caution in the elderly and in people with glaucoma, urinary retention, or certain stomach problems

If you’re experiencing side effects that are bothersome, persistent, or worrisome, talk with your clinician. Do not stop the medication abruptly unless instructed. If you’d like, tell me your dose, what you’re taking it for (anxiety, itching, etc.), and any other medicines you’re on, and I can tailor the info a bit more.