No, Allegra® Hives does not have phenylephrine in its formulation. It is made with Fexofenadine HCl, a non-drowsy antihistamine that reduces hives and relieves the itching caused by hives.

Reduces red, bumpy hives and relieves itchy skin due to hives. Relieves runny nose; sneezing; itchy nose or throat; and itchy, watery eyes.

If your doctor has prescribed this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. A very serious allergic reaction to this drug is rare.

If you experience any of the following serious side effects after taking Allegra seek immediate medical help: Rash. Hives. Difficulty breathing or swallowing.

Some studies suggest that stress or fatigue can trigger hives. Use an anti-itch drug available without a prescription. A nonprescription oral antihistamine, such as loratadine (Alavert, Claritin, others), cetirizine (Zyrtec Allergy, others) or diphenhydramine (Benadryl Allergy, others), may help relieve itching.

Allegra works within two hours and Zyrtec works within one hour. Several studies have found cetirizine (Zyrtec) to be more effective than fexofenadine (Allegra) at relieving symptoms of allergic rhinitis and urticaria, and it appears to have a longer duration of action.

Hives are best treated with an over-the-counter antihistamine or topical creams like hydrocortisone or calamine lotion. Antihistamine medications suppress the histamine that is released from the body, causing your itchy reaction. Topical treatments work on your skin's cells to stop the histamine from being released.

What is the most important information I should know about Allegra Hives 24 Hour (Oral)? You should not use fexofenadine if you are allergic to it. Ask a doctor before using this medicine if you are pregnant or breastfeeding.

fexofenadine food Consuming large amounts of certain fruit juices, including grapefruit, orange and apple, may decrease the levels of fexofenadine in your body. Fexofenadine should be taken with water and refrain from drinking large amounts of grapefruit, orange, or apple juice.

Antihistamines may stop working because hives can become worse over time or because the intensity of hives can wax and wane over time. It's also possible that antihistamines become less effective because people aren't taking them as prescribed.

Some studies suggest that stress or fatigue can trigger hives. Use an anti-itch drug available without a prescription. A nonprescription oral antihistamine, such as loratadine (Alavert, Claritin, others), cetirizine (Zyrtec Allergy, others) or diphenhydramine (Benadryl Allergy, others), may help relieve itching.

If you need a stronger antihistamine, your dermatologist may prescribe doxepin. Corticosteroid: When hives are severe, a medication like prednisone can reduce the inflammation and itch.