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Doctor insights on: For How Long Does Claritin Stay In Your System

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For how long does Claritin (loratadine) stay in your system?

For how long does Claritin (loratadine) stay in your system?

One day: Claritin (loratadine) 10 mg pill is dosed once daily. That's because it's effect will last about 24 hours, after that it's antihistamine effect wanes. However, Claritin is metabolized by the liver into another active compound called desloratadine, so the antihistamine effect can last a while. This is why most allergists have patients stop their Claritin a number of days before skin testing them. ...Read more

Dr. Ashraf Abdel Azeem
537 Doctors shared insights

Claritin (Definition)

Claritin is a non-sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


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How long does Claritin (loratadine) d stay in your system?

How long does Claritin (loratadine) d stay in your system?

3-5 days: The average half-life of Claritin (loratadine) is 8 hours meaning that half the dose is gone/metabolized after 8 hours and after 8 more hours another half is gone. Doing the math, the Claritin (loratadine) is effectively out of a person's system in 3-5 days, except in geriatric patients it could possibly take up to 10 days. ...Read more

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How long Claritin (loratadine) stay in system?

Loratidine: The average half-life of loratidine (claritin) is about 8 hours. This means almost 90% of the drug is out of your system 24 hours after taking it (on average). ...Read more

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My 6mo old was prescribed loratadine/ambroxol. She seems very drowsy, why? And how long will it stay I her system?

My 6mo old was prescribed loratadine/ambroxol. She seems very drowsy, why? And how long will it stay I her system?

Mgt: If your baby is more drowsy/lethargic, not feeding well, please see your ED. This may not be related to the medications, but rather to an illness. The ambroxol should be discontinued until further evaluation is completed. For excessive mucus production, nasal saline drops and gentle suction is the only treatment advised in this age group, unless there is a tracheostomy or some other problem. ...Read more

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If I take zertec for a long period 10mo then switch to Claritin (loratadine) can my sinuses become dependent on zyrtec and over produce mucus w/o zyrtec in system?

If I take zertec for a long period 10mo then switch to Claritin (loratadine) can my sinuses become dependent on zyrtec and over produce mucus w/o zyrtec in system?

Unlikely: While the "good" effect of zyrtec (cetirizine) will be gone in several days, there is no known problem of "rebound" or worsening symptoms when stopping oral antihistamines. More likely, is the continued exposure to the allergens. Here is where an allergist will be able to assist. ...Read more

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How long does Claritin (loratadine) take to work?

How long does Claritin (loratadine) take to work?

About 1.5 hours: The onset of clinical symptom relief is about 1.5 hours for claritin (loratadine). To read the study that compares this to zyrtec and Allegra go to: http://www. Ncbi. Nlm. Nih. Gov/pubmed/15176489. ...Read more

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How long does Claritin (loratadine) d take to work?

How long does Claritin (loratadine) d take to work?

Claritin (loratadine) D: Hello, this is a complicated answer in that claritin-d is a combination medication. The onset of Claritin is within 3 hours and the pseudofed will begin it's effects in the nasal cavity within 30 minutes. ...Read more

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How long it take for Claritin (loratadine) to work?

About 1.5 hours: Onset of clinical relief is about 1 hour for zyrtec and Allegra and about 1.5 hours for claritin (loratadine). To read the study, go to: http://www. Ncbi. Nlm. Nih. Gov/pubmed/15176489. ...Read more

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How long should it take for my Claritin (loratadine) to work?

How long should it take for my Claritin (loratadine) to work?

Up to 1 hour: Claritin (loratadine) can work relatively quickly in most people. That is, it usually works within 30 minutes. However, in some people it may take up to 60 minutes to have its full effect. If it is not working within that time, or if the duration of effect becomes less and less, seeing an allergy specialist for allergy testing would be recommended as other treatments may be more effective. ...Read more

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How long does it take childrens Claritin (loratadine) to work?

1-2 weeks: If there are absolutely no improvements in about a week, I tend to switch people over to zyrtec. It can be a little sedating for some, but I have found it to be much more effective than claritin (loratadine). ...Read more

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How long will it take for my Claritin (loratadine) to kick in?

About 1.5 hours: Onset of relief of symptoms will take about 1.5 hours for claritin (loratadine). This information can also be found at: http://www. Ncbi. Nlm. Nih. Gov/pubmed/15176489
other studies show that onset could take up to 3 hours. ...Read more

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How long after taking Claritin (loratadine) will you feel better?

1-2 hours: While Claritin (loratadine) is rapidly absorbed, it takes about1.2 hours to reach maximum concentration in the body. If taken with food this can delay it another hour. Therefore, about 1-2 hours. ...Read more

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How long does it take for loratadine to work?

Same day: You should be able to hopefully notice some results withing the same day you take it. ...Read more

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How long does it take for claritin-d to work.

How long does it take for claritin-d to work.

1 to 3 hours: Claritin d is a combination antihistamine [claritin= loratadine] and d= decongestant pseudoephedrine. This product is rapidly absorbed then metabolized to the active product with relief beginning within 1 to 3 hours. ...Read more

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How long after I take Claritin (loratadine) should the swelling go down?

Maybe 30 minutes: I am not sure this is the right medication to use for swelling, but usually Claritin (loratadine) starts kicking in within 30 minutes. ...Read more

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How long does"24-hour" loratidine (i.E. Claritin) really stay with you? Maybe 16 hours, you think?

Great question!: Loratidine is metabolized to it's active metabolite, desloratidine which has a half life of 28 hours (range 9-96). This is very long acting but there is variability among individuals based on how your liver metabolizes it which is genetically determined. If you take a drug for 5 half lives, you develop a steady state blood level ie it's more effective if you take it every day than just occ doses. ...Read more

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What are the differences between loratadine and desloratidine in how well it works or how long it lasts?

What are the differences between loratadine and desloratidine in how well it works or how long it lasts?

Take one, get both: When you take loratidine, your liver breaks it down to desloratine which is actually responsible for the anti-histamine effects you need. Desloratidine has a much longer effect (28 hours) than loratidine (8 hours) which is why loratidine lasts such a long time. ...Read more

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HOW LONG DOES IT TAKE FOR CLARITIN (loratadine) LIQUID GELS TO KICK IN?

In 1-3 hours: Claritin (loratadine) starts working within 1 to 3 hours. It reaches its peak effect in 8 to 12 hours. ...Read more

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How long does it take for Claritin (loratadine) to take effect on hives??

3 days to reach peak: Claritin (loratadine) (loratidine) takes 3 days to reach a steady state, so it could take that long for it to work on hives. Other non-drowsy antihistamines are a better choice: Allegra (fexofenadine) reaches peak effect within 2 hours and Zyrtec (cetirizine) reaches peak effect in 1-2 hours. If you see no benefit at all within 5 hours of taking these, they probably will not work for you. ...Read more

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How many weeks does it take for claritin (loratadine) 10mg to work? How long should I give it a try before deciding to switch to a different antihistamine?

How many weeks does it take for claritin (loratadine) 10mg to work? How long should I give it a try before deciding to switch to a different antihistamine?

A few hours: Claritin (loratadine) should start working within a couple of hours. If it doesn't not help at all, then switching to another won't do you much good. If it does help somewhat, then you may try the other alternatives which may possess more antihistamine effect than Claritin (loratadine). ...Read more

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How long after I take Claritin (loratadine) should my allergy swelling go down?

How long after I take Claritin (loratadine) should my allergy swelling go down?

Couple of hours: Antihistamines can help with the itching and swelling that accompany allergic reactions. If the swelling is significant, it may take several hours to a day or so. For milder symptoms, Loratadine may begin to help in 1-2 hours. ...Read more

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After taking 2 days of Claritin (loratadine) d 24 hour then stopping how long can I expect the side effect to last. It stimulated my anxiety.

About 24 hours: Decongestants like the 'D' in this version of Claritin (loratadine) can have side effects like restlessness, increased heart rate and blood pressure. It's an extended release formula which helps it last 24 hrs. After that 24hrs, the last bit of the D to be released should be pretty much out of your system within another 24hrs. If having prolonged or worrisome symptoms, seek medical care. ...Read more

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How long do I have to wait to drink alcohol after taking claritin?

How long do I have to wait to drink alcohol after taking claritin?

For ever: Alcohol is a poison and it never did anybody any good, ever. So abstain.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex. ...Read more