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How are severe allergies treated?

Antihistamines are often needed along with nasal steroids to treat severe allergies. These medications block histamine, a substance released by the body in response to allergens. Some oral antihistamines, such as diphenhydramine, can cause drowsiness and may be best when taken at night. For daytime use, consider loratadine (Claritin), fexofenadine (Allegra), or cetirizine (Zyrtec).

Antihistamines in the form of a nasal spray are only available by prescription and typically used to treat more severe allergy symptoms. Compared with oral antihistamines, nasal antihistamines directly target the nasal passages, but may cause a bitter taste and headache.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.