Clarinex (Desloratadine) Medication


Clarinex (Desloratadine)

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Generic Alternative - Clarinex (Desloratadine)

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Clarinex is a prescribed medication for the relief of hay fever and allergy symptoms, such as sneezing, runny nose, and red, itchy, and watery eyes. 

Clarinex is also indicated for the alleviation of symptoms associated with urticaria (hives; red, itchy raised patches on the skin) encompassing itching and rash.  

Belonging to the class of drugs called antihistamines, Clarinex works by inhibiting histamine, an allergenic compound in the body responsible for allergic symptoms. 

Uses and Dosage 

Before taking Clarinex and with each prescription refill, thoroughly review its medication guide and patient information leaflet. Seek advice from your doctor or pharmacist for any questions or clarifications. 

Clarinex dosage may vary per individual based on age, medical condition, and response to the treatment. 

Typically, Clarinex is taken once a day as prescribed by the doctor, without regard to food intake.  

Take this medication exactly as prescribed; avoid exceeding or reducing the dosage or frequency without consulting your physician. 

Inform your physician of any lack of improvement or deterioration in your condition. 

Side Effects 

While serious side effects are rare in those taking Clarinex, common side effects listed below may still occur. Notify your doctor immediately if any of these symptoms persist or worsen. 

  • Dry mouth 
  • Sore throat 
  • Muscle pain 
  • Drowsiness 
  • Tiredness 
  • Menstrual pain 

Allergic Reactions 

An extreme allergic response to Clarinex is infrequent; however, seek immediate medical assistance if you experience any indications of a severe allergic reaction, such as: 

  • Rash 
  • Itching 
  • Swelling, especially of the face, tongue, or throat 
  • Severe dizziness 
  • Difficulty breathing 

This list of Clarinex’s side effects is not comprehensive. If you encounter any unlisted effects, inform your doctor promptly. 


Before taking Clarinex, inform your doctor and pharmacist if you have any known hypersensitivities, especially to  

  • Desloratadine 
  • Loratadine (e.g., Alavert, Claritin) 
  • Other medicines 
  • Any ingredients present in Clarinex tablets 

To ensure Clarinex is safe for you, disclose to your physician your medical background, specifically regarding any history of kidney or liver disease. 

Inform your doctor and pharmacist about all the medicines you are taking, including prescription and over-the-counter drugs, other dietary supplements, and herbal products, to minimize the possibility of drug interactions that could impact the efficacy of Clarinex or increase the likelihood of adverse effects. 

Desloratadine, the active ingredient in Clarinex, closely resembles loratadine. Avoid concomitant use of medications containing loratadine with Clarinex. 

Clarinex can potentially affect specific laboratory tests, including allergy skin testing, leading to inaccurate results. Inform laboratory personnel and all medical professionals about your use of this medication. 

Clarinex typically does not induce drowsiness when taken as directed. Nonetheless, refrain from driving, operating machinery, or engaging in activities that demand alertness until you can safely carry out such tasks. 

The use of Clarinex during pregnancy should be limited to situations where it is clearly necessary. Discuss with your doctor the potential risks and benefits of taking this medication. 

Before breastfeeding, seek medical advice, as desloratadine can be transmitted through breast milk. 

Additional information

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30, 90, 100

Quality Prescription Drugs has provided information from third parties intended to increase awareness and does not contain all the information about Clarinex (Desloratadine). Talk to your doctor or a qualified medical practitioner for medical attention, advice, or if you have any concerns about Clarinex (Desloratadine).