Hydroxyzine helps relieve itch in allergic skin conditions, such as hives (raised red swellings) and eczema.
This medicine is also used to treat short-term anxiety in adults. It may also be used to facilitate sleep and prevent vomiting, motion sickness, and apprehension or anxiety prior to or after surgery.
Hydroxyzine may be used to treat other conditions as decided by your doctor.
Take Hydroxyzine exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by the doctor.
This medicine can be taken with or without food. Try to take it at the same time each day.
Hydroxyzine is available as a tablet, capsule, syrup, or an oral solution.
If you are taking an oral solution or syrup, shake the bottle well before you take it to ensure that the liquid is evenly mixed. Use the measuring spoon or cup provided to measure out your prescribed dose.
You may stop taking Hydroxyzine once you feel better or if there are no more allergies, unless your doctor has instructed you otherwise.
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.
DO NOT double a dose under any circumstances.
Alert your doctor if you have the following conditions:
- acquired or inherited disease causing fast heartbeats
- existing or a history of irregular or abnormal heartbeat
- family history of sudden heart attack
- low potassium or magnesium level in the blood
- asthma with previous bad reactions to medicines for cold or allergy
- porphyria (an inherited disorder that may cause skin or nervous system abnormalities)
- severe liver disease
Do not take Hydroxyzine if you are pregnant or planning to have a baby soon. If you become pregnant while being treated with this medicine, alert your doctor immediately. Hydroxyzine may cause harm to your unborn child. You must use proven birth control methods while taking this medicine.
Do not take this medicine if you are breastfeeding.
Do not take Hydroxyzine with some medicines for high blood pressure or heart disease, mood disorders, depression, cancer, and some antibiotics. Please see the section “Can I take this with other medicines?” below for more information.
Inform your doctor if you have any of the following conditions:
- heart disease
- high blood pressure
- mild to moderate liver disease
- kidney disease
- thyroid disorder
- lung disease e.g. asthma
- stomach problems e.g. stomach ulcer or obstruction
- fits or seizures
- glaucoma (increased pressure in the eyes)
- myasthenia gravis (muscle weakness disorder)
- enlarged prostate gland or inability to empty the bladder and urinate
Be sure to check with your doctor or pharmacist before giving Hydroxyzine to a child or elderly person. Children and elderly people may be more sensitive to the side effects.
Hydroxyzine may interfere with the results of some tests for asthma and allergy. Inform your doctor or nurse that you are taking this medicine.
Hydroxyzine may cause drowsiness, incoordination, dizziness and blurred vision. If affected, do not drive or take part in any activity in which you need to be alert.
Other side effects may include any of the following: headache, ringing in the ears, dry mouth, wheezing, nausea, vomiting, constipation, stomach pain, tiredness, muscle pain, and flushing.
Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:
- fast or irregular heartbeats, difficulty in breathing, loss of consciousness
- slow or ineffective breathing
- blood clots
- involuntary shaking of the hands or legs, fits or seizures
Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Do not take Hydroxyzine with the following:
- medicines for high blood pressure or heart disease e.g. quinidine, amiodarone, sotalol
- some medicines for mood disorder e.g. haloperidol
- some medicines to treat depression e.g. escitalopram
- some anti-cancer medicines e.g. toremifene
- some antibiotics e.g. erythromycin, levofloxacin
- some medicines to treat malaria e.g. mefloquine
- methadone (strong painkiller)
Inform your doctor and pharmacist if you are taking any of these medicines:
- other medicines for allergy e.g. promethazine, cetirizine
- medicine for epilepsy (fits) e.g. phenobarbital, diazepam
- medicines for depression e.g. amitriptyline, imipramine, isocarboxazid, moclobemide
- medicines for moderate to severe pain e.g. meperidine, codeine, tramadol
- medicines for anxiety or sleep disorder e.g. alprazolam, lorazepam
- cimetidine (medicine to neutralise stomach acid)
- epinephrine (medicine used for emergency treatment of severe allergic reactions)
- betahistine (medicine for dizziness with sensations of spinning)
This list does not include all medicines that may interact with Hydroxyzine.
Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
Avoid alcohol. Consuming large amount of alcohol is damaging to your liver.
Avoid St. John’s wort.
Store in a cool, dry place away from the reach of children. Protect from light.
Medicines must not be used past the expiry date.