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What is Claritin-D 12 Hour: Uses, Warnings & Interactions

Updated Jan 12, 2021  •  Published Dec 30, 2020

Claritin-D 12 Hour overview

BRAND NAMES:

  • Loratadine D, Leader Allergy Relief D-24, Alavert D-12 Hour, Allergy & Congestion Relief, Allergy Relief, Allergy Relief-D, Claritin-D, Claritin-D 12HR, Claritin-D 24 Hour, Good Neighbor Allergy & Congestion Relief 24 Hour, Good Neighbor Pharmacy Allergy & Congestion Relief, Good Neighbor Pharmacy Loratadine-D, Health Mart Allergy Relief & Nasal Decongestant, Kirkland Signature AllerClear-D, Leader Allergy Relief D-12

Generic Names:

  • Claritin-D 12 Hour

Uses:

  • Treats hay fever symptoms such as a runny or stuffy nose, sneezing, and watery eyes. Loratadine is an antihistamine, and pseudoephedrine is a decongestant.

Therapeutic Classes:

  • Antihistamine, Less-Sedating/Decongestant Combination, Antihistamine/Decongestant Combination

Forms:

  • 12 Hour Tablet, Long Acting Tablet, 24 Hour Tablet

How it’s taken:

  • By mouth

What form(s) does Claritin-D 12 Hour come in

  • 12 Hour Tablet

  • Long Acting Tablet

  • 24 Hour Tablet

What are common Claritin-D 12 Hour doses?

  • Box 10 Tablets Extended Release 12 Hour

  • Box 20 Tablets Extended Release 12 Hour

  • Box 30 Tablets Extended Release 12 Hour

Common Claritin-D 12 Hour prescriptions

  • Claritin-D 12 Hour
    10 tablets extended release 12 hour bottle

  • Claritin-D 12 Hour
    15 tablets extended release 12 hour bottle

  • Claritin-D 12 Hour
    20 tablets extended release 12 hour bottle

  • Claritin-D 12 Hour
    30 tablets extended release 12 hour bottle

  • Claritin-D 12 Hour
    10 tablets extended release 12 hour box

  • Claritin-D 12 Hour
    20 tablets extended release 12 hour box

  • Claritin-D 12 Hour
    30 tablets extended release 12 hour box

  • Claritin-D 12 Hour
    5 tablets extended release 12 hour box

How to take Claritin-D 12 Hour

  • Your doctor will tell you how much to take and how often. You should not use more of this medicine than your doctor ordered.

  • Claritin-D 24 Hour® extended-release tablets should only be taken once a day.

  • Take the tablet with a full glass of water.

  • Swallow the tablet whole. Do not break, crush, or chew.

  • It is best to take this medicine on an empty stomach.

  • Drink plenty of liquids while taking this medicine.

  • It is best to take this medicine on an empty stomach.

  • Swallow the tablet whole. Do not break, crush, or chew.

  • Drink plenty of liquids while taking this medicine.

  • Your doctor will tell you how much to take and how often. You should not use more of this medicine than your doctor ordered.

  • Claritin-D 24 Hour® extended-release tablets should only be taken once a day.

  • Take the tablet with a full glass of water.

What to do if you miss a dose of Claritin-D 12 Hour

  • You should not use two doses at the same time.

  • Skip the missed dose if it is almost time for your next regular dose.

  • Take your medicine as soon as possible unless it is almost time for your next dose. If you are taking Claritin-D 24 Hour®, you should only take one dose a day.

Claritin-D 12 Hour contraindications

  • You should not use this medicine if you have had an allergic reaction to loratadine or pseudoephedrine. If you have glaucoma, problems urinating, severe high blood pressure, or heart disease or if you have taken a type of medicine called an MAO inhibitor (such as Marplan®, Parnate®, or Nardil®) in the past 14 days, then you should not take this medicine. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

Claritin-D 12 Hour warnings

  • If you are pregnant or breastfeeding, talk to your doctor before taking this medicine.

  • Make sure your doctor knows if you have liver disease, diabetes, thyroid problems, high blood pressure, kidney disease, or prostate problems before taking this medicine.

  • You should not use Claritin-D 24 Hour® tablets if you have trouble swallowing tablets. The tablet could get stuck as it passes down toward your stomach.

  • This medicine may make you drowsy or dizzy. Be careful if you are driving or using machinery.

Claritin-D 12 Hour interactions

  • Avoid drinking alcohol while taking this medicine.

  • You should not use other antihistamines or decongestants while taking this medicine, including those you buy without a doctor's prescription.

  • Make sure your doctor knows if you are also taking medicine for high blood pressure, ketoconazole (Nizoral®), cimetidine (Tagamet®), or erythromycin (E.E.S.®, ERYC®, Ery-Tab®, and others).

  • This medicine may make you drowsy or dizzy. Be careful if you are driving or using machinery.

Claritin-D 12 Hour side effects

Serious Side Effects

  • Dizziness or drowsiness

  • Fainting or passing out

  • Dry mouth or nose

  • Wheezing or trouble breathing

  • Fast, pounding, or irregular heartbeat

Less Serious Side Effects

  • Headache

  • Dizziness or drowsiness

  • Dry mouth or nose

  • Trouble sleeping

  • Nervousness

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