Desloratadine (By mouth)
Treats or prevents hives, allergy symptoms, and hay fever symptoms. This medicine is an antihistamine.
Clarinex, Clarinex Reditabs
There may be other brand names for this medicine.
When This Medicine Should Not Be Used
You should not use this medicine if you have had an allergic reaction to desloratadine or to loratadine (Claritin®).
How to Use This Medicine
Tablet, Dissolving Tablet, Liquid
- Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.
- You may take this medicine with or without food.
- Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
- If you are using the disintegrating tablet, make sure your hands are dry before you handle the tablet. Do not open the blister pack that contains the tablet until you are ready to take it. Remove the tablet from the blister pack by peeling back the foil, then taking the tablet out. Do not push the tablet through the foil. Place the tablet in your mouth. It should melt quickly. After the tablet has melted, swallow or take a drink of water.
If a dose is missed:
- If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.
How to Store and Dispose of This Medicine
- Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep all medicine away from children and never share your medicine with anyone.
- Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- There may be medicines that could interact with desloratadine. Make sure your doctor knows about all other medicines you are using.
Warnings While Using This Medicine
- Make sure your doctor knows if you are pregnant or breast feeding, or if you have liver disease or kidney disease. Tell your doctor if you have a history of heart problems, and about any other medical problems you may have.
- Some forms of this medicine may contain phenylalanine (aspartame). Read the label before using this medicine. This is only a concern if you have a disorder called phenylketonuria (a problem with amino acids). If you have this condition, talk to your doctor before using this medicine.
Possible Side Effects While Using This Medicine
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Fast or irregular (uneven) heartbeat.
- Pain when urinating, or trouble urinating.
- Yellowing of your skin or the whites of your eyes.
If you notice these less serious side effects, talk with your doctor:
- Fever, cough, sore throat, or headache.
- Drowsiness, dizziness, nervousness, or other mood changes.
- Dry mouth or throat.
- Nausea, diarrhea, upset stomach.
- Mild skin rash.
- Muscle aches.
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
- Last Reviewed on 06/12/2013
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This page was last updated: June 18, 2013