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Doctor insights on: Accidentally Loratadine

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Dr. Michael P Vaughn Dr. Vaughn
Internal Medicine - Allergy & Immunology
30 years in practice
Virginia Commonwealth University School of Medicine
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I accidentally overdosed on loratadine. What can I do?

I accidentally overdosed on loratadine. What can I do?

Nothing: Claritin (loratadine) and most other nonsedating third generation antihistamines are very safe. The initial studies for Claritin (loratadine) were done at 40 mg (4 times the currently recommended dose). If a physical symptom is experienced after using any medication at an excessively high dose, the best resource is the "poison control" center. They are available 24/7 by calling 1-800-poison1.

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Dr. Robert Kwok Dr. Kwok
Pediatrics
29 years in practice
Baylor College of Medicine
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I accidentally took 2 loratadine 10 mg tablets and it says take once a day. Should I go to the doctors?

I accidentally took 2 loratadine 10 mg tablets and it says take once a day. Should I go to the doctors?

Sounds ok, but...: Some people try 2 loratadine (Claritin) per day because 1 per day did not help. The recommended dose is 1 per day, for use as an allergy medication. So, people who try 2 per day should go back to 1 per day if they did not see a big improvement when taking 2 per day. They should ask their doctors to confirm a diagnosis and ask which other medication can help, instead of taking 2 Claritin per day.

Dr. Jeffrey Rumbyrt Dr. Rumbyrt
Internal Medicine - Allergy & Immunology
28 years in practice
Loyola University Chicago Stritch School of Medicine
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What happens if I accidentally take 2 Claritin (loratadine) d in one day?

What happens if I accidentally take 2 Claritin (loratadine) d in one day?

It depends: There are two different doses of Claritin (loratadine) d - a twelve hour dose and a twenty four hour dose. Obviously, the 12 hour dose is recommended twice a day, 12 hours apart. If you were to take two 24 hour tablets, you would be getting the equivalent of 16 sudafed tablets. That could cause agitation, insomnia, rapid heart rate, and an elevation in blood pressure. That would not be recommended.

Dr. Evans Prieston Dr. Prieston
Pharmacology
40 years in practice
West Virginia University School of Medicine
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What happens if you accidentally take 2 claritins (loratadine) (10mg each) in 24 hours when you're supposed to only take one? Anything serious would happen?

Extra Claritin (loratadine): If you are in generally good health with normal kidney and liver function, and you are not taking other sedating medications, there are not likely to be serious consequences. The worst you might experience would be excessive drowsiness, sedation, etc so don't drive for 24 hours. Also do not consume alcohol or take other medications that are CNS depressants for 48 hours.

Dr. Amrita Dosanjh Dr. Dosanjh
Pediatrics - Pulmonology
32 years in practice
UC San Diego School of Medicine
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My son accidentally took two doses of 10mg of loratadine. Is this harmful?

My son accidentally took two doses of 10mg of loratadine. Is this harmful?

Mgt: I think it should not result in harmful side effects. If you do notice any changes, please report them right away to your PCP.

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Dr. Philip Miller Dr. Miller
Family Medicine
43 years in practice
Autonomous University of Guadalajara Faculty of Medicine
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I took Loratadine 10mg 4 hours ago and accidentally took another now. Will I be ok?

I took Loratadine 10mg 4 hours ago and accidentally took another now. Will I be ok?

YES: Very safe; however since you doubled the dose you may experience dry mouth, blurring of vision or tiredness (rare). I suggest 8-10 glasses of fluids daily to flush this through your system.

Dr. Steven Cohen Dr. Cohen
Internal Medicine - Allergy
45 years in practice
The Ohio State University College of Medicine
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Is it okay if I accidentally consumed two tablets of claritin (loratadine)?

Is it okay if I accidentally consumed two tablets of claritin (loratadine)?

Probably: Doubling the dose may not provide additional relief and may be more likely to cause sedation.

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Dr. Ronald Krauser Dr. Krauser
Internal Medicine - Rheumatology
48 years in practice
Wake Forest University School of Medicine
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Dr. Pam Yoder Dr. Yoder
Obstetrics & Gynecology - Maternal Fetal Medicine
years in practice
University of Illinois College of Medicine
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My baby is 22 months old, and I think he ate a Claritin (loratadine) tablet accidently?

My baby is 22 months old, and I think he ate a Claritin (loratadine) tablet accidently?

PLEASE BE CAREFUL!!!: Take this as a warning that a curious little kid or toddler can and will be able to get into almost any packaging. And please take the threat seriously. Contact a local hospital or board of health and go online for more information about tox lines, prevention, first aid. This is not a one-time occurrence but a wake up call to parents!

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Dr. Kristin Sokol Dr. Sokol
Internal Medicine - Allergy & Immunology
8 years in practice
University of Miami Miller School of Medicine
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I may have accidentally taken twice the Normal dose of otc Claritin (loratadine). Do I need to seek medical attention?

No: Claritin (loratadine) is an oral antihistamine that has minimal side effects, even when taking a large dose. You will not have any problems with twice the dose.

Dr. John Chiu Dr. Chiu
Internal Medicine - Allergy & Immunology
53 years in practice
University of Vermont College of Medicine
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Dr. James Ferguson Dr. Ferguson
Pediatrics
42 years in practice
University of Texas Medical Branch School of Medicine
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Can you take loratadine 20mg?

Yes, but why?: Studies of loritadine show the medication is well tolerated at twice the recommended 10 mg dose. However, the same studies show no added benefit of the double dose in symptom relief over the regular dose schedule.

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Dr. Luis Matos Dr. Matos
Integrative Medicine
41 years in practice
University of Puerto Rico School of Medicine
14

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Is loratadine 20 mg a normal dose?

Is loratadine 20 mg a normal dose?

Not in the USA: The full adult dose of Loratadine in other parts of the world is 20 mg. That was the most effective dose. This amount caused a 12-14% drowsiness rate. This was not acceptable for marketing in the USA. The 10 mg dose was tested against Chlorpheniramine in order to find a non-drowsy dose and it worked. So for most 10 mg is fine. Worse allergy, 20mg would help and a few will develop drowsiness.

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Dr. James Ferguson Dr. Ferguson
Pediatrics
42 years in practice
University of Texas Medical Branch School of Medicine
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Can I take two loratadine tablets?

Can I take two loratadine tablets?

Yes, but why?: Studies of loritadine show the medication is well tolerated at twice the recommended 10 mg dose. However, the same studies show no added benefit of the double dose in symptom relief over the regular dose schedule. If one is not working well, you may want to try otc fexofenadine or a steroid nasal spray.

Dr. Linda Green Dr. Green
Pediatrics - Allergy & Asthma
41 years in practice
Jefferson Medical College of Thomas Jefferson University
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When is best time to take loratadine?

When is best time to take loratadine?

Anytime: Since Loratadine is a non sedating antihistamine it can be taken either morning or night.

Dr. James Ferguson Dr. Ferguson
Pediatrics
42 years in practice
University of Texas Medical Branch School of Medicine
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What is the loratadine maximum dosage?

What is the loratadine maximum dosage?

Why?: Studies during development showed that the body was very tolerant to loratadine, with no significant side effects at twice the recommended dosage. However, they also found that there was no increased benefit with twice the dosage over the normal dose. Why take more if there is no benefit?

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Dr. Nayla Mumneh Dr. Mumneh
Internal Medicine - Allergy & Immunology
25 years in practice
State University of New York Downstate Medical Center College of Medicine
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What amount loratadine is an overdose?

What amount loratadine is an overdose?

Loratadine: 10mg is the recommende dose, anythiing higher should be under medical guidance. Its safety has been studied up to 40mg a day, but it is sedating at that point.

Dr. Stuart Kanter Dr. Kanter
Internal Medicine - Geriatrics
17 years in practice
Midwestern University Chicago College of Osteopathic Medicine
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I took 20mg of loratadine. Is that ok?

Yes: The recommended daily dose of Loratadine is 10mg, but the risk of harm at 20mg is very low.

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