Top
30
Doctor insights on: How Long Does Loratadine Stay In Your System

Share
1

1
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

2

2
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

3

3
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

4

4
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

5

5
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

6

6
A quick way to get 24 hr Claritin (loratadine) out of my system?

A quick way to get 24 hr Claritin (loratadine) out of my system?

Quickest way: Quickest way is to wait 24 hours and let it clear out on its own. ...Read more

10

10
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

11

11
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

12

12
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

13

13
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

14

14
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

16

16
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

17

17
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

19

19
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

22

22
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

23

23
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

24

24
Is it safe to take loratadine long term, everyday, for allergies?

Is it safe to take loratadine long term, everyday, for allergies?

Prob ok: Antihistamines have been around for decades, and certainly many more potent than loratadine. They say worldwide the most common drug taken is diphenhydramine, mostly for the sedative properties (as a sleep aid). Antihistamines can affect certain types of glaucoma, and accentuate urine retention in those with prostate issues and dry mucous membranes, but usually not so much with loratadine per say. ...Read more

25

25
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

26

26
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

27

27
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?

Try for a few days: Antihistamines begin to work in less than an hour but a person may not feel significant relief for a few days. Claritin tends to be one of the weaker non-drowsy antihistamines. Others available without a prescription are Zyrtec, Allegra and Xyzal. If antihistamines are still not working then an evaluation by an allergist can be helpful to determine the cause of symptoms ...Read more

28

28
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

29

29
Headache is getting worse. I have been on claritin, (loratadine) flonaz, and zyrtec but nothing seems to help long-term. Any suggestions?

Evaluation: I would recommend that you confirm with your provider if allergies are the reason for your headache. You have used allergy medications to treat your headache and apparently have not had benefit. I think it may be likely that your headache is not allergy related at this point. ...Read more

30

30
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