Adults and children 6 years of age and older—One tablet or 10 milligrams (mg) once a day. Do not take more than one tablet per day.
What happens if I take more than one dose of Claritin®? Taking more than the recommended dose of Claritin® may cause drowsiness. In the case of overdose, get medical help or contact a Poison Control Center right away- always follow label directions. See individual product pages for label directions.
Do not take more than one dose in 24 hours. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Do not take 2 antihistamines together unless recommended by your doctor.
Adults and children 12 years of age and older—One tablet every 12 hours. Each tablet contains 5 milligrams (mg) loratadine and 120 mg pseudoephedrine. Do not take more than 2 tablets in 24 hours.
Do not take 2 doses at the same time or extra doses. Many times Claritin-D 24 Hour Allergy & Congestion (loratadine and pseudoephedrine) is taken on an as needed basis. Do not take more often than told by the doctor.
Take one Claritin every day for it to be the most effective, but don't take more than one pill a day, even if you missed a pill the day before. Taking multiple pills a day increases your risk of serious side effects.
Taking too much antihistamine can lead to adverse side effects and a potential antihistamine overdose. Antihistamines are a class of medication that treat allergy symptoms, such as sneezing, runny nose, and itching. As with any medication, taking too much can be harmful.
Do not take 2 antihistamines together unless recommended by your doctor.
“Zyrtec is found to be more potent, or stronger, in laboratory studies, compared with Claritin,” says Dr. Kung. “It also reaches a higher concentration in the skin, which can be more helpful for skin-related allergies. However, Zyrtec has a greater chance of making you sleepy while taking it.”
Common symptoms of overdosing on Claritin® may include drowsiness, headaches, and fast pounding heart rate. For any questions or concerns you may have about taking Claritin® or if someone has had more than the prescribed dosage, call the Poison Help Line at 1-800-222-1222.
Adults and children 6 years and older: The typical dose is 10 mg by mouth once per day. The maximum dose is 10 mg per day. Children 2 to under 6 years of age: The typical dose is 5 mg by mouth once per day. The maximum dose is 5 mg per day.
Interactions between your drugs
No interactions were found between Claritin 24 Hour Allergy and Zyrtec.
Claritin (loratadine) is an over-the-counter antihistamine used to treat allergy symptoms like itchy eyes and a runny nose. Claritin typically starts working in 1 to 3 hours. Its effects usually last for around 24 hours. Claritin is available as a lower-cost generic.
No interactions were found between Claritin and Zyrtec. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.
Benadryl, Claritin, and Zyrtec are likely cleared from your body about 2 days after your last dose. But Claritin and Zyrtec may have residual effects for 1 to 4 days after stopping daily use.
For oral dosage form (chewable tablets, orally disintegrating tablets, tablets): Adults and children 6 years of age and older—One tablet or 10 milligrams (mg) once a day. Do not take more than one tablet per day.
Do NOT "double-up" on a dose. Do NOT take a dose sooner than you're supposed to. Do NOT take two different antihistamines at the same time. Instead, talk to your doctor or pharmacist if you have trouble finding a drug that works well for your allergy symptoms.
Antihistamine Overdose Symptoms
The first clue that you've taken too much of any antihistamine is that you'll feel more tired than usual. “If somebody's feeling sleepy or has dry mouth, definitely talk to your provider,” says Hill. “Those are the kinds of side effects that you might experience if you do double up.”
The U.S. Food and Drug Administration (FDA) is warning that taking higher than recommended doses of the common over-the-counter (OTC) allergy medicine diphenhydramine (Benadryl) can lead to serious heart problems, seizures, coma, or even death.
For long-acting oral dosage form (tablets): Adults—4 or 6 milligrams (mg) every eight to twelve hours as needed. Children 4 years of age and older—Use and dose must be determined by your doctor. Children and infants up to 4 years of age—Use is not recommended .
Sometimes, despite aggressive allergy treatment, nasal congestion persists. It's possible that the culprit is sinusitis. Whether you are seeking a diagnosis, treatment, or ongoing management for sinusitis, we are here to guide you through every step of your journey.
What Is Claritin? Claritin (loratadine) is an antihistamine used to treat allergy symptoms. Claritin blocks the action of histamine, a substance in the body that initiates allergic symptoms like itching, sneezing, runny nose, and allergic skin rashes.