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For How Long Does Claritin 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 moreSee 1 more doctor answer
3-5 days: The average half-life of Claritin 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 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
If i take zertec for a long period 10mo then switch to Claritin can my sinuses become dependent on zyrtec and over produce mucus w/o zyrtec in system?
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
Up to 1 hour: Claritin 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 moreSee 1 more doctor answer
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