# cold remedies antagonizing one another?

**URL:** <https://boards.straightdope.com/t/cold-remedies-antagonizing-one-another/802989>\
**Category:** Factual Questions\
**Created:** [November 28, 2017, 11:03pm UTC](https://boards.straightdope.com/t/cold-remedies-antagonizing-one-another/802989 "2017-11-28T23:03:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![CC](https://avatars.discourse-cdn.com/v4/letter/c/f1d935/32.png) [@CC](https://boards.straightdope.com/u/CC)\
**Post date:** [November 28, 2017, 11:03pm UTC](https://boards.straightdope.com/t/cold-remedies-antagonizing-one-another/802989/1 "2017-11-28T23:03:50Z")

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I’m wondering about taking expectorants/cough suppressants at the same time as taking anti-histamines and decongestants. Since expectorants cause an increase in secretions and anti-histamines and decongestants tend to inhibit production of fluids, do these drugs counteract one another? Is it a mistake to take them together?