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Clarinex (Desloratadine)

Also Known as Aerius,Neoclarityn

Prescription requiredOnly Available By Prescription
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What is Generic?

What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Clarinex, also known by its generic name Desloratadine, is a widely-used antihistamine medication designed to relieve allergy symptoms. Whether you suffer from seasonal allergies, such as hay fever, or year-round allergic reactions, Clarinex can provide effective relief from bothersome symptoms like sneezing, runny nose, itchy or watery eyes, and itching of the throat or nose. Clarinex belongs to the second-generation antihistamine class, which is preferred for its non-drowsy formula and minimal side effects.

Before you buy Clarinex or Clarinex generic, it is crucial that you talk to your healthcare provider about its effectiveness and potential side effects.

Fact Table
Formula C19H19ClN2
License US FDA, US DailyMed, US FDA
Bioavailability Rapidly absorbed
Legal status Rx-Only
Chemical Name Desloratadine
Elimination half-life 27 hours
Dosage (Strength) 5mg
Pregnancy Consult Doctor
Brands Clarinex
Protein binding 83 to 87%
PubChem CID 124087
MedlinePlus a602002
ChEBI 291342
ATC code R06AX27
DrugBank DB00967
KEGG D03693
Routes of administration By mouth

Buy Clarinex (Desloratadine) online from online Canadian Pharmacy |


Adults and Children 12 Years of Age and Older:

Take one Clarinex 5 mg tablets daily with or without food.

Do not exceed the recommended dosage.

Children 6 to 11 Years of Age:

Take half a Clarinex tablet (2.5 mg) daily with or without food.

Use Clarinex syrup for easier administration in children.

Children Under 6 Years of Age:

Clarinex is not recommended for children under 6 years of age unless prescribed by a healthcare professional.

Please follow the dosage instructions provided by your healthcare provider or the label on the packaging. Do not exceed the recommended dose, as doing so may increase the risk of side effects


The active ingredient in Clarinex is Desloratadine.


Inform your healthcare provider if you are allergic to Desloratadine or any other antihistamines. Allergic reactions to Clarinex are rare but possible.

If you are pregnant or breastfeeding, consult your healthcare provider before using Clarinex.

If you have liver or kidney problems, your healthcare provider may need to adjust your Clarinex dosage or recommend an alternative treatment.

Clarinex is generally non-drowsy, but some individuals may experience drowsiness. Use caution when operating machinery or engaging in activities that require alertness until you know how Clarinex affects you.


Clarinex may interact with other medications, potentially affecting its effectiveness or causing adverse effects. Some common drug interactions with Clarinex include Ketoconazole, Erythromycin, Rifampin, Cimetidine and Alcohol.

Side Effects

While Clarinex is generally well-tolerated, like any medication, it can cause side effects in some individuals. Common side effects of Clarinex may include:

  • Headache
  • Dry mouth
  • Fatigue
  • Stomach upset
  • Nausea
  • Muscle pain
  • Nervousness

Frequently Asked Questions about Clarinex

What is Clarinex used for?

Clarinex (Desloratadine) is an antihistamine medication used to relieve allergy symptoms, including sneezing, runny nose, itchy or watery eyes, and itching of the throat or nose. It is commonly used for seasonal allergies like hay fever and year-round allergic reactions.

How does Clarinex work?

Clarinex works by blocking the action of histamine, a natural substance in the body that causes allergy symptoms. By inhibiting histamine, Clarinex helps alleviate the symptoms associated with allergic reactions.

Is Clarinex available over the counter (OTC)?

In some countries, Clarinex is available over the counter, while in others, it may require a prescription. It's important to check your local regulations and consult with a healthcare provider as needed.

Can children take Clarinex?

Clarinex is approved for children as young as 6 years old, but the dosage may vary based on age. Consult your healthcare provider for the appropriate dose for your child.

Can I take Clarinex with other allergy medications?

It's essential to consult your healthcare provider before combining Clarinex with other allergy medications, as they may interact or duplicate effects. Your healthcare provider can advise you on the best approach to managing your allergies.

How long does it take for Clarinex to start working?

Clarinex typically begins to work within 30 minutes to 1 hour after taking a dose. However, individual response times may vary.

Can I drink alcohol while taking Clarinex?

While Clarinex is generally non-drowsy, alcohol consumption can enhance its sedative effect, potentially leading to increased drowsiness and impairment. It's advisable to limit alcohol intake while using Clarinex.

Can I take Clarinex if I have other medical conditions?

Clarinex may be safe for individuals with certain medical conditions, but it's essential to inform your healthcare provider about any pre-existing conditions, especially liver or kidney problems, before using Clarinex. Your healthcare provider can determine the most appropriate treatment for your situation.

Is Clarinex safe during pregnancy and breastfeeding?

While Clarinex is generally considered safe during pregnancy and breastfeeding, it's crucial to consult your healthcare provider before using any medication during these periods. Your healthcare provider can provide guidance on the potential risks and benefits.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.