Drugs Information Online
Drugs and diseases reference index

Drugs and diseases reference index

Drugs A-Z List

Diseases & Conditions A-Z List

Herbs & Supplements

Medical Dictionary

Full Article

Popular Drugs

Popular Diseases & Conditions

Drugs reference index «Loratadine»



Brand names: Claritin

Why is Loratadine prescribed?

Claritin is an antihistamine that relieves the sneezing, runny nose, stuffiness, itching, and tearing eyes caused by hay fever or other upper respiratory allergies. It also relieves the swollen, red, itchy patches of skin caused by hives. Claritin is also available as an over-the-counter product.

Most important fact about Loratadine

If you have liver or kidney disease, your doctor should prescribe a lower starting dose of Claritin.

How should you take Loratadine?

Claritin is available in syrup, regular tablets, and rapidly dissolving tablets called Reditabs. The Reditabs should be placed on the tongue rather than swallowed. They disintegrate rapidly and can be taken with or without water.

--If you miss a dose...

Take the forgotten dose as soon as you remember. If it is almost time for your next dose, skip the one you missed. Never take two doses at the same time.

--Storage instructions...

Claritin can be stored at room temperature. The Reditabs should be kept in a dry place. Use them within 6 months after opening the foil pouch in which they are packed. Take each tablet immediately after removing it from its individual blister.

Loratadine side effects

Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Claritin.

  • Side effects may include:Dry mouth, fatigue, headache, sleepiness

Why should Loratadine not be prescribed?

Do not take Claritin if you are sensitive to or have ever had an allergic reaction to it. Make sure your doctor is aware of any drug reactions that you have experienced.

Special warnings about Loratadine

This medication may cause excessive sleepiness in people with liver or kidney disease, or older adults, and should be used with caution.

Possible food and drug interactions when taking Loratadine

Although no harmful interactions with Claritin have been reported, there is a theoretical possibility of an interaction with the following drugs:Antibiotics such as erythromycinCimetidine (Tagamet)Ketoconazole (Nizoral)

Special information if you are pregnant or breastfeeding

The effects of Claritin during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, inform your doctor immediately. Claritin appears in breast milk and could affect a nursing infant. If Claritin is essential to your health, your doctor may advise you to discontinue breastfeeding until your treatment with Claritin is finished.

Recommended dosage for Loratadine


The usual dose is 10 milligrams once a day, taken as 1 tablet or 2 teaspoonfuls of syrup. In people with liver or kidney disease, the usual dose is 10 milligrams every other day.


The usual dose is 1 teaspoonful of syrup once a day. If the child has kidney or liver problems, give 1 teaspoonful every other day.


Any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.

  • Symptoms of Claritin overdose may include:Headache, rapid heartbeat, sleepiness
  • Loratadine Professional Patient Advice (Wolters Kluwer)
  • Loratadine MedFacts Consumer Leaflet (Wolters Kluwer)
  • Alavert Syrup MedFacts Consumer Leaflet (Wolters Kluwer)
  • Alavert Prescribing Information (FDA)
  • Claritin Consumer Overview
  • Claritin Liqui-Gels MedFacts Consumer Leaflet (Wolters Kluwer)

See Also...