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What Is Claritin?

Claritin is an over-the-counter antihistamine containing loratadine. A common tablet contains 10 mg and gives 24-hour relief of symptoms from hay fever or other upper respiratory allergies. These symptoms include runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat.

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What Is Claritin?

Claritin is an over-the-counter antihistamine containing loratadine. A common tablet contains 10 mg and gives 24-hour relief of symptoms from hay fever or other upper respiratory allergies. These symptoms include runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat.

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How Does Claritin Reduce Allergy Symptoms?

Loratadine is a second-generation antihistamine that blocks peripheral histamine H1 receptors. Histamine released during an allergic reaction contributes to sneezing, nasal symptoms, itching, and watery eyes. Blocking H1 receptor activity reduces these symptoms with less central nervous system penetration than first-generation antihistamines.

Which Symptoms Does Claritin Relieve?

Claritin temporarily relieves runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat caused by hay fever or other upper respiratory allergies. The 10 mg tablet is intended for once-daily use under current over-the-counter directions.

How Are Claritin 10 mg Tablets Taken?

Adults and children age 6 and older take one 10 mg tablet once daily and should not exceed one tablet in 24 hours. Children younger than 6 require medical advice before use. People with liver or kidney disease are also directed to ask a doctor whether a different dose is needed.

What Safety Precautions Apply to Claritin?

Claritin should not be used by anyone with a prior allergic reaction to loratadine or other ingredients in the product. Taking more than directed can cause drowsiness. People with liver or kidney disease should seek medical advice before use, since a different dose can be needed.

Frequently Asked Questions About Claritin

What medicine is in Claritin?

Claritin contains loratadine, an antihistamine used for allergy symptom relief.

How often is Claritin 10 mg taken?

Adults and children age 6 and older take one tablet daily, with no more than one tablet in 24 hours.

Can Claritin cause drowsiness?

Drowsiness can occur, especially when more than the directed dose is taken.

Does Claritin help with itchy or watery eyes?

Yes. It temporarily relieves itchy or watery eyes caused by hay fever or other upper respiratory allergies.

References

Claritin Tablets 24 Hour. https://www.claritin.com/products/claritin/tablets-24hour. Date Accessed September 22, 2026.

DailyMed - CLARITIN (loratadine) tablet. https://www.dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ac32d6f9-f553-4d5c-ad36-575af5ea56de. Date Accessed September 22, 2026.

Loratadine. MedlinePlus. https://www.medlineplus.gov/druginfo/meds/a697038.html. Date Accessed September 22, 2026.

Loratadine. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/3957. Date Accessed September 22, 2026.

Loratadine. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK542278/. Date Accessed September 22, 2026.