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How can antihistamines help with treating pollen allergies?

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These drugs work against the chemical histamine. Your body makes histamine during an allergic reaction, and it causes the symptoms that make you miserable.

Antihistamines are available in pills and nasal sprays. The pills target itching, sneezing, and runny nose. The nasal sprays work on congestion, an itchy or runny nose, and postnasal drip.

From: Medications to Treat Pollen Allergies WebMD Medical Reference

SOURCES:

American Academy of Allergy Asthma and Immunology (AAAAI): “SLIT Treatment (Allergy Tablets) for Allergic Rhinitis Nothing to Sneeze About.”

FDA. "Itching for Allergy Relief?" News release.

Robert Wood Johnson University Hospital: "Allergens: Pollen."

National Jewish Health: "Pollen Allergy."

National Institute of Environmental Health Sciences: "Pollen."

Sanofi-aventis U.S. News release.

UpToDate: “Patient information: Allergic rhinitis (seasonal allergies).”

Mayo Clinic: “Nonallergic rhinitis.”

Reviewed by Neha Pathak on April 10, 2019

SOURCES:

American Academy of Allergy Asthma and Immunology (AAAAI): “SLIT Treatment (Allergy Tablets) for Allergic Rhinitis Nothing to Sneeze About.”

FDA. "Itching for Allergy Relief?" News release.

Robert Wood Johnson University Hospital: "Allergens: Pollen."

National Jewish Health: "Pollen Allergy."

National Institute of Environmental Health Sciences: "Pollen."

Sanofi-aventis U.S. News release.

UpToDate: “Patient information: Allergic rhinitis (seasonal allergies).”

Mayo Clinic: “Nonallergic rhinitis.”

Reviewed by Neha Pathak on April 10, 2019

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How can decongestants help with treating pollen allergies?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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