August 22, 2014
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Drug Factsheets

 Health Home >> Medications 

Reactine

(cetirizine)

DIN (Drug Identification Number)

02223554 REACTINE 10MG TABLET
02238337 REACTINE 5MG/5ML SYRUP
01900978 REACTINE 20MG TABLET
02223546 REACTINE 5MG TABLET

What side effects are possible with Reactine?

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.

The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.

The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.

Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.

  • abdominal pain
  • coughing
  • dry mouth
  • headache
  • irritated or sore throat
  • nausea
  • nosebleeds

Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

  • difficult or painful urination
  • pounding, fast, or irregular heartbeat

Stop taking the medication and seek immediate medical attention if any of the following occur:

  • seizures
  • symptoms of a severe allergic reaction, e.g.:
    • difficulty breathing
    • hives
    • swelling of the mouth or throat

Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.





Are there any other precautions or warnings for Reactine?

Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.

Drowsiness/reduced alertness: Studies have shown that cetirizine does not cause drowsiness under normal circumstances. A small percentage of people taking this medication have experienced a degree of drowsiness. Do not drive or operate machinery if you become drowsy while taking this medication.

Reduced kidney function: If you have reduced kidney function, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Reduced liver function: If you have reduced liver function, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.

Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.

Breast-feeding: It is not known if cetirizine passes into breast milk. If you are a breast-feeding mother and are taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using this medication for seasonal allergies and allergic skin conditions have not been established for children less than 2 years of age. The safety and effectiveness of using this medication for year-round allergies have not been established for children 12 years of age and under.

Seniors: Seniors may be more sensitive to the effects of cetirizine. Therefore, a lower starting dose may be recommended by your doctor or pharmacist.

What other drugs could interact with Reactine?

There may be an interaction between cetirizine and any of the following:

  • alcohol
  • antidepressants (e.g., amitriptyline, paroxetine)
  • benzodiazepines (e.g., lorazepam, diazepam)
  • muscle relaxants (e.g., baclofen, methocarbamol)
  • narcotic pain medications (e.g., codeine, oxycodone, morphine)
  • other antihistamines (e.g., diphenhydramine, chlorpheniramine, hydroxyzine)
  • sleep aids (e.g. zopiclone)

If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:

  • stop taking one of the medications,
  • change one of the medications to another,
  • change how you are taking one or both of the medications, or
  • leave everything as is.

An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.

Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.

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