Indications
- Hydroxyzine is used to treat itching caused by allergies.
- It is an antihistamine that works by blocking the natural substance histamine, produced during allergic reactions.
- Hydroxyzine may also be used short-term for anxiety treatment or to induce sleepiness/relaxation before and after surgery.
Dosage and administration
- Take the medication orally, with or without food, as directed by your doctor, usually three or four times daily.
- When using the liquid form, measure the dose carefully with a special measuring device/spoon; avoid using a household spoon for accuracy.
- Dosage is determined by age, medical condition, and treatment response; for children, it may also be based on weight.
- Do not exceed the prescribed dose or take the medication more frequently than directed.
- Inform your doctor if your condition does not improve or if it worsens.
Side effects
- Possible side effects include drowsiness, dizziness, blurred vision, constipation, or dry mouth.
- Inform your doctor or pharmacist promptly if any of these effects persist or worsen.
- To alleviate dry mouth, use sugarless hard candy, ice chips, sugarless gum, drink water, or use a saliva substitute.
- The medication is prescribed because its benefits outweigh potential side effects.
- Serious side effects may include mental/mood changes, shaking (tremor), and difficulty urinating; notify your doctor promptly if experienced.
- Seek immediate medical help for very serious side effects such as seizures, fast/irregular heartbeat, severe dizziness, or fainting.
- A rare but severe allergic reaction may occur; get medical help for symptoms like rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing.
- This is not an exhaustive list of possible side effects; contact your doctor or pharmacist for any other observed effects.
Precautions
- Before taking hydroxyzine, inform your doctor or pharmacist about allergies to it, cetirizine, levocetirizine, or any other allergies.
- Discuss your medical history, especially breathing problems, high eye pressure, high blood pressure, kidney/liver problems, seizures, stomach/intestine problems, overactive thyroid, or difficulty urinating.
- Hydroxyzine may cause QT prolongation, leading to serious (rarely fatal) fast/irregular heartbeat and other symptoms that require immediate medical attention.
- The risk of QT prolongation may increase with certain medical conditions or drugs; inform your doctor of all medications and relevant medical conditions.
- Low potassium/magnesium levels in the blood may elevate the risk of QT prolongation; discuss using hydroxyzine safely with your doctor.
- This drug may cause dizziness, drowsiness, or blurred vision. Alcohol or marijuana can intensify these effects; avoid activities requiring alertness until safe. Discuss marijuana use with your doctor.
- Before surgery, disclose all products you use to your doctor or dentist.
- Liquid products may contain sugar/alcohol; caution advised for those with diabetes, liver disease, or conditions limiting/avoiding these substances. Consult your doctor or pharmacist.
- Children may be more sensitive to side effects, experiencing excitement instead of drowsiness.
- Older adults may be more sensitive to side effects, particularly drowsiness, confusion, constipation, trouble urinating, or QT prolongation.
- During pregnancy, use this medication only when necessary; discuss risks and benefits with your doctor.
- It is unclear if the drug passes into breast milk; consult your doctor before breastfeeding.
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