- 10 Common Allergy Triggers Slideshow Pictures
- Take the Quiz on Allergies
- Nasal Allergy Relief Products Slideshow
- What is loratadine, and how does it work (mechanism of action)?
- What brand names are available for loratadine?
- Is loratadine available as a generic drug?
- Do I need a prescription for loratadine?
- What are the uses for loratadine?
- What are the side effects of loratadine?
- What is the dosage for loratadine?
- Which drugs or supplements interact with loratadine?
- Is loratadine safe to take if I'm pregnant or breastfeeding?
- What else should I know about loratadine?
What is loratadine, and how does it work (mechanism of action)?
Loratadine is a long-acting, non-sedating antihistamine that is used for the treatment of allergies. Histamine is a chemical that causes many of the signs and symptoms of an allergy. Histamine is released from histamine-storing cells (mast cells) and attaches to other cells that have receptors for histamine on their surfaces. Histamine stimulates the cells to release chemicals that produce effects that we associate with allergy, including welts, itching, and tissue swelling. Loratadine blocks one type of histamine receptor (the H1 receptor) and thus prevents activation of cells with H1 receptors by histamine. Unlike some antihistamines, loratadine does not enter the brain from the blood and, therefore, does not cause drowsiness when taken at recommended doses. The FDA approved loratadine in April 1993.
What brand names are available for loratadine?
Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin, and others
What are the uses for loratadine?
What is the dosage for loratadine?
The usual dose of loratadine is 10 mg daily for adults and children older than six years of age. The dose for children 2 to 6 years of age is 5 mg daily.
Which drugs or supplements interact with loratadine?
: Erythromycin, cimetidine (Tagamet), and ketoconazole (Nizoral) increase the blood concentration of loratadine by inhibiting the elimination of loratadine. This may result in increased adverse events from loratadine.
Is loratadine safe to take if I'm pregnant or breastfeeding?
What else should I know about loratadine?
What preparations of loratadine are available?
- Tablets: 10 mg.
- Tablets, disintegrating: 5 and 10 mg.
- Tablets, chewable: 5 mg.
- Syrup: 5 mg/5 ml.
How should I keep loratadine stored?
Tablets should be stored between 2 C and 30 C (36 F and 86 F), and syrup should be stored between 2 C and 25 C (36 and 77 F).
Quick GuideBad Bugs: Identify Bug Bites From Mosquitos, Spiders and More
Loratadine (Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin, and others) is drug prescribed for the treatment of the symptoms of non-nasal and nasal seasonal allergic rhinitis and hives (urticaria or allergic skin rash). Drug interactions, dosing, and side effects are discussed in the information.
Multimedia: Slideshows, Images & Quizzes
Bed Bugs Quiz: How to Get Rid of Bed Bugs
That unexplained itching could be caused by bedbugs. Take the Bedbugs Quiz to learn the causes and symptoms of a bedbug...
Picture of Fixed Drug Eruption
A large red-violet plaque on the arm of a child. See a picture of Fixed Drug Eruption and learn more about the health topic....
Picture of Urticaria
This is a close-up view of wheals with white-to-light-pink color centrally and peripheral erythema. See a picture of Urticaria...
Could I Be Allergic? Discover Your Allergy Triggers
Allergies are an overreaction of the immune system where the body's defenses react to substances such as pollen, food and more....
Home Allergy Quiz: Is Your Home Allergy-Proof?
Take this home allergy quiz and test your knowledge on allergens, dust mites, pollens and more to see how allergy-proof your home...
10 Worst Cities for Spring Allergies With Pictures
See pictures of the top 10 "spring allergy capitals", according to the Asthma and Allergy Foundation of America (AAFA). From...
Pictures of Allergy Relief Tips at Home: AC Filters, Electronic Air Cleaners, and More
Learn how a combination of medication, preventing allergens, and allergy relief products can reduce allergy symptoms and help you...
Nasal Irrigation: Natural Relief for Cold & Allergy Symptoms
Nasal irrigation can relieve sinus symptoms associated with colds & allergies. Learn how nasal irrigation can help unclog sinuses...
The Most Common Food Allergies for Kids and Adults
What common food allergens cause the most problems for adults and children? See this list of common food allergies and learn to...
Out-of-Control Allergy Symptoms: Treatment Relief in Pictures
Learn 10 signs your allergies are out of control. See these surprising allergy symptoms and find out how to get relief for...
Nasal Allergy Attack: Causes, Triggers, Treatments
What causes allergies? What are your allergy triggers? Discover how allergies work, why our bodies react to them, whether...
Related Disease Conditions
Hay Fever (Allergic Rhinitis)
Hay fever (allergic rhinitis) is an irritation of the nose caused by pollen and is associated with the following allergic...
Latex allergy is a condition where the body reacts to latex, a natural product derived from the rubber tree. The reaction can...
Pinkeye, also called conjunctivitis, is redness or irritation of the conjunctivae, the membranes on the inner part of the eyelids...
Hives (Urticaria & Angioedema)
Hives, also called urticaria, is a raised, itchy area of skin that is usually a sign of an allergic reaction. The allergy may be...
The word "rash" means an outbreak of red bumps on the body. The way people use this term, "a rash" can refer to many different...
Chronic Rhinitis and Post-Nasal Drip (Symptoms, Treatment)
Chronic rhinitis and post-nasal drip symptoms include an itchy, runny nose, sneezing, itchy ears, eyes, and throat. Seasonal...
An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. ...
The most common food allergies are to eggs, nuts, milk, peanuts, fish, shellfish, strawberries and tomatoes. Symptoms and signs...
Cold, Flu, Allergy Treatments
Before treating a cold, the flu, or allergies with over-the-counter (OTC) medications, it's important to know what's causing the...
Lichen planus is a common skin disease that features small, itchy pink or purple spots on the arms or legs. the abnormal areas on...
Eye allergy (or allergic eye disease) are typically associated with hay fever and atopic dermatitis. Medications and cosmetics...
Allergy Treatment Begins At Home
Avoiding allergy triggers at home is one of the best ways to prevent allergy symptoms. Controlling temperature, humidity, and...
Itch (Itching or Pruritus)
Itching can be a common problem. Itches can be localized or generalized. There are many causes of itching to include: infection...
Drug Allergy (Medication Allergy)
Drug or medication allergies are caused when the immune system mistakenly creates an immune response to a medication. Symptoms of...
Pityriasis rosea is a rash that begins with a large pink patch with well-defined scaly borders on the back, chest, or neck. In...
Treatment & Diagnosis
- Bed Bugs FAQs
- Medication Disposal
- Dangers of Mixing Medications
- Asthma Rates Increasing
- How To Reduce Your Medication Costs
- Pharmacy Visit, How To Get The Most Out of Your Visit
- Indications for Drugs: Approved vs. Non-approved
- Claritin Cleared of Birth Defect Hypospadias
- Drugs: Buying Prescription Drugs Online Safely
- Drugs: The Most Common Medication Errors
- Travel Medicine Kit
- OTC Cold and Cough Medications
- Generic Drugs, Are They as Good as Brand-Names?
Medications & Supplements
- fexofenadine, Allegra, Allegra Allergy, Allegra Hives, Children's Allegra, Mucinex Allergy
- cetirizine, Zyrtec, Zyrtec Allergy, Zyrtec Hives
- loratadine and pseudoephedrine (Alavert Allergy & Sinus, Claritin-D, Claritin-D 24 hour)
- fexofenadine and pseudoephedrine, Allegra-D
- Nasal Allergy Medications
- Drugs: Questions to Ask Your Doctor or Pharmacist about Your Drugs
- Drug Interactions
- Antihistamines (Oral)
Prevention & Wellness
- Common Meds and Dementia: How Strong Is the Link?
- Certain Allergy, Depression Meds Tied to Higher Odds for Dementia
- Sizing Up Your Options for Hay Fever Relief
- Managing Seasonal Allergies
- When Prescription Drugs Go OTC, Ads Talk Less of Harms: Study
- Health Highlights: June 21, 2012
- Spring Allergy Relief Can Be Hard to Find
Health Solutions From Our Sponsors
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.