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What are the side effects of antihistamines?

ANSWER

Older ones tend to cause more side effects, particularly drowsiness. Newer antihistamines have fewer side effects, so they may be a better choice for some people. Some of the main side effects of antihistamines include:

  • Dry mouth
  • Drowsiness
  • Dizziness
  • Nausea and vomiting
  • Restlessness or moodiness (in some children)
  • Trouble urinating or not being able to urinate
  • Blurred vision
  • Confusion

SOURCES:

American Academy of Allergy, Asthma & Immunology: "NAB: Frequently Asked Questions."

AAAAI Allergy & Asthma Medication Guide: "Tips to Remember: Asthma & Allergy Medications."

Rakel, D. 2007. Integrative Medicine,

Wallace, D.V. , August 2008. Journal of Allergy and Clinical Immunology

Motala C. , June 2009. Current Allergy & Clinical Immunology

Reviewed by Carol DerSarkissian on May 15, 2019

SOURCES:

American Academy of Allergy, Asthma & Immunology: "NAB: Frequently Asked Questions."

AAAAI Allergy & Asthma Medication Guide: "Tips to Remember: Asthma & Allergy Medications."

Rakel, D. 2007. Integrative Medicine,

Wallace, D.V. , August 2008. Journal of Allergy and Clinical Immunology

Motala C. , June 2009. Current Allergy & Clinical Immunology

Reviewed by Carol DerSarkissian on May 15, 2019

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What should you consider when taking antihistamines?

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