Question 1

for how long does claritin (loratadine) stay in your system?

Accepted Answer

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.

Question 2

how long does claritin (loratadine) d stay in your system?

Accepted Answer

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.

Question 3

a quick way to get 24 hr claritin (loratadine) out of my system?

Accepted Answer

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

Question 4

my 6mo old was prescribed loratadine/ambroxol. she seems very drowsy, why? and how long will it stay i her system?

Accepted Answer

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.

Question 5

i had 30 mg of zyrtec on monday, 40 mg of claritin (loratadine) on tuesday, and 30 mg of claritin (loratadine) on wednesday. when will it all be out of my system?

Accepted Answer

Med clearance: 50 - 60 percent clearance in 24-30 hours, then total clearance in 5-7 days

Question 6

how much allegra is safe on a daily basis? my system needs a break from claritin (loratadine) and zyrtec apparently, but 1 allegra is not working fully.

Accepted Answer

180mg: 180 mg allegra (fexofenadine) is maximum dose. If you are needing antihistamine daily, hopefully you have seen an allergist.

Question 7

if i stop taking claritin (loratadine) will the side effects go away overnight and by that i mean in a 24 hour period? or will it take a couple of days for all the medicine to be out of my system?

Accepted Answer

Claritin (loratadine): You do not mention what are your side effects. The antihistaminic effect of the medication may persist for up to 5 days, if you took Claritin (loratadine) d, the decongestant side effects will subside within 24 hours.

Question 8

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?

Accepted Answer

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.

Question 9

my dr prescribed claritin (loratadine) for a skin reaction, but its no longer effective. can i take a second dose so i can get a decent night's sleep?

Accepted Answer

Caution: the maximum dose for Claritin is 10mg per day. So if you took 5 mg before, you can certainly take one more. Otherwise, try some skin lotions to moisturize the skin. Don't bathe or shower in hot water. Have Benadryl (diphenhydramine) or use Benadryl (diphenhydramine) lotion if you can find it.

Question 10

my allergy medication is no longer working. how long should i wait after stopping daily 10mg loratadine doses before switching to daily 180mg fexofenadine doses? i've read that don't want to mix anti-histimines, so is a wait period necessary?

Accepted Answer

: You can stop loratadine today and start fexofenadine tomorrow. You should not use them in combination, such as using loratadine along with certirizine or fexofenadine or benadryl or hydroxyzine at the same time.

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Doctor answers about:

How long does loratadine stay in your system

A member asked:

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

A member asked:

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

A member asked:

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

A member asked:

My 6mo old was prescribed loratadine/ambroxol. she seems very drowsy, why? and how long will it stay i her system?

A member asked:

I had 30 mg of zyrtec on monday, 40 mg of claritin (loratadine) on tuesday, and 30 mg of claritin (loratadine) on wednesday. when will it all be out of my system?

A member asked:

How much allegra is safe on a daily basis? my system needs a break from claritin (loratadine) and zyrtec apparently, but 1 allegra is not working fully.

A member asked:

If i stop taking claritin (loratadine) will the side effects go away overnight and by that i mean in a 24 hour period? or will it take a couple of days for all the medicine to be out of my system?

A member asked:

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?

A member asked:

My dr prescribed claritin (loratadine) for a skin reaction, but its no longer effective. can i take a second dose so i can get a decent night's sleep?

A member asked:

My allergy medication is no longer working. how long should i wait after stopping daily 10mg loratadine doses before switching to daily 180mg fexofenadine doses? i've read that don't want to mix anti-histimines, so is a wait period necessary?

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