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A member asked:

How long does it take for claritin (loratadine) to start working?

A doctor has provided 1 answer

Pretty Quickly: Most antihistamines will start to work within the first 30-40 minutes.

Answered 10/3/2018

4.8k views

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I took a Claritin (loratadine) and it is not working can I take an allegra before 24 hours?

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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?

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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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My pollen allergies are killing me. I'm taking Claritin (loratadine) but its not working well what else can I take that is non drowsy?

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Had sinus infection since July.Doc put me on Loratadine since antibios weren't working. Soon as I take med pain middle of head. not there before. Bad?

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