antihistamine
noun
an·ti·his·ta·mine
ˌan-tē-ˈhi-stə-ˌmēn 
-mən,
ˌan-tī-
: any of various compounds that counteract histamine in the body and that are used for treating allergic reactions (such as hay fever) and cold symptoms
antihistamine
adjective
Examples of antihistamine in a Sentence
Recent Examples on the Web
Antidepressants, blood pressure meds, antihistamines, and again, birth control can impact libido.
—
Dominique Fluker, Essence, 5 Aug. 2025
Take an antihistamine before bedtime to alleviate a dry cough at night or in the early morning.
—Health Editorial Team, Health, 29 July 2025
Examples of these newer antihistamines include: Oral decongestants, such as pseudoephedrine, which is typically found behind the counter.
—Karen Berger, Verywell Health, 29 July 2025
It is also recommended to use either topical or oral antihistamines to reduce itching, such as hydrocortisone cream, calamine lotion, or an antihistamine gel (which reduces itching), as well as Benadryl or Claritin.
—Jenna Prestininzi, Freep.com, 15 July 2025
See All Example Sentences for antihistamine
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Dominique Fluker, Essence, 5 Aug. 2025
Take an antihistamine before bedtime to alleviate a dry cough at night or in the early morning.
—Health Editorial Team, Health, 29 July 2025
Examples of these newer antihistamines include: Oral decongestants, such as pseudoephedrine, which is typically found behind the counter.
—Karen Berger, Verywell Health, 29 July 2025
It is also recommended to use either topical or oral antihistamines to reduce itching, such as hydrocortisone cream, calamine lotion, or an antihistamine gel (which reduces itching), as well as Benadryl or Claritin.
—Jenna Prestininzi, Freep.com, 15 July 2025
See All Example Sentences for antihistamine
Cite this Entry
“Antihistamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antihistamine. Accessed 10 Aug. 2025.
Copy CitationKids Definition
antihistamine
noun
an·ti·his·ta·mine
ˌant-i-ˈhis-tə-ˌmēn
-mən,
ˌan-ˌtī-
: any of various drugs used for treating allergic reactions and cold symptoms
Medical Definition
antihistamine
1 of 2 adjective
an·ti·his·ta·mine
ˌant-i-ˈhis-tə-ˌmēn, ˌan-ˌtī-, -mən
: tending to block or counteract the physiological action of histamine
human blood lacks antihistamine activity
antihistamine
2 of 2 noun
: any of various compounds that oppose the actions of histamine and are used especially for treating allergic reactions (as hay fever), cold symptoms, and motion sickness
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