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A member asked:
How many days does an allergic reaction lasts while taking antihistamines (cetirizine 10mg) once a day?
A doctor has provided 1 answer
Depends on details: For example, if a food reaction is merely itching, nausea, or some hives, a person can take antihistamines like cetirizine to decrease the reaction. Hives are due to release of histamine, commonly related to allergy to foods, medicines, viruses, molds, animals, pollens, etc... Some people release histamine and get hives if exposed to cold weather, cold water, strong sunshine, emotional stress,...
Answered 10/7/2019
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Related Questions
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Why are the mg dosage of antihistamines different? Allegra is 180mg , Claritin (loratadine) is 5mg , and zyrtec is 10mg.
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I believe I have PMLE and read that antihistamines can help. I take 10mg of cetirizine every morning. Can I take a 180mg Allegra in the afternoon?
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Zyrtec or allegra (fexofenadine) for hives: which is the better antihistamine?
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I'm looking for a natural antihistamine for seasonal allergies rather than using zyrtec (cetirizine)?
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What if I am concerned my hives are caused by an antihistamine in the first place? I.E. Zyrtec and allegra (fexofenadine)
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