Advertisement

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.

Continue Learning about Allergies Treatments

Do's and Don'ts to Calm Watery, Itchy Eyes
Do's and Don'ts to Calm Watery, Itchy Eyes
Endless sneezing and stuffed-up noses drive most allergy sufferers to see their doctors. But many people put up with itchy, watery eyes and dark under...
Read More
How long does an allergy shot take to work?
Univ. of Nev. School of Medicine, Family MedicineUniv. of Nev. School of Medicine, Family Medicine
Allergy shots are designed to help your body recognize the allergen better, thus decreasing your all...
More Answers
What can help treat allergies?
TriStar Centennial Medical CenterTriStar Centennial Medical Center
The first-line therapy against allergy symptoms is over-the-counter (or OTC) antihistamines such as ...
More Answers
How Can I Prevent a Stuffy Nose If I Have Allergies?
How Can I Prevent a Stuffy Nose If I Have Allergies?

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.