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A member asked:

How long until an antihistamine works on post nasal drip?

A doctor has provided 1 answer

THEY WON'T HELP MUCH: Other than drying it up a bit and thickening it, which can cause cough. The key in trying to eliminate postnasal drip is to cut the inflammatory or environmental response that it is caused by.

Answered 9/11/2018

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Related Questions

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Hi. I've had terrible post nasal drip the last week. Home remedies and antihistamines haven't helped. what can I take that will get rid of the PND?

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Can a persistent post-nasal drip be linked to nausea? My aunt has had moderate drainage for the past year and stays nauseous. Will Antihistamines help

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A member asked:

I have a persistent post nasal drip for 3 weeks now and it has developed into a dry scratchy cough. I have treated this with OTC decongestants and antihistamines, but it does not get better, only worst. What can I do to get some relief?

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A member asked:

Will post nasal drip likely stop after allergy season?? I've had it since April and I have seasonal allergies I don't take antihistamines for it.

8 doctors weighed in across 4 answers

A member asked:

Can antihistamines like Zyrtec cause dry cough bec I think my post nasal drip may be gone but still take Zyrtec when I think it possible may not need?

A doctor has provided 1 answer

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