Fexofenadine is an antihistamine medication that comes in a capsule or tablet form. It treats and prevents symptoms of allergies like itchy eyes, sneezing and hives. It works by blocking histamine in your body. A common brand name of this medication is Allegra®.

Each capsule contains 60 mg fexofenadine hydrochloride and the following excipients: croscarmellose sodium, gelatin, lactose, microcrystalline cellulose, and pregelatinized starch.

How Fexofenadine (Allegra) works. Fexofenadine (Allegra) is an antihistamine. It blocks histamine, a natural chemical in your body that can cause allergy symptoms like itchiness, itchy eyes, or runny nose. By blocking histamine, fexofenadine (Allegra) helps relieve allergy symptoms.

18 /PRNewswire-FirstCall/ -- Sanofi-aventis U.S. (EURONEXT: SAN and NYSE: SNY) announced today that the U.S. Food and Drug Administration (FDA) has approved Allegra(R) (fexofenadine hydrochloride) Oral Suspension for the twice-daily treatment of symptoms associated with seasonal allergies in pediatric patients, 2 to 11 ...

Antihistamines work by blocking a substance called histamine in your body. Histamine is known for causing allergy symptoms. Blocking it helps prevent symptoms of seasonal allergies or hay fever. Both Allegra and Zyrtec are effective at treating allergy symptoms and take a similar amount of time to start working.

While it's generally well tolerated, it may cause side effects for some people. Common Allegra side effects include headache, indigestion, and dry mouth. Very rarely, people may experience drowsiness or fatigue after a dose. Side effects from Allegra are usually mild and can be managed at home.

Non-drowsy - unlike first-generation antihistamines Allegra® Hives reduces hives all day long in the preferred oral form. That's 24 hours of inside-out relief from itching due to hives without the drowsy feeling that comes with first-generation antihistamines.

Allegra® 24 Hour Tablets are vegetarian. They do not come not from any animal origin. They do not contain casein, eggs, dairy, lactose, iodine, peanuts, shellfish, soy, tree nuts, or whey.

Adult Allergy Relief Choose from everyday Allegra products that provide up to 24 hours of non-drowsy relief for hay fever and allergy symptoms, Allegra D for nasal congestion relief, or Allegra Hives for relief from hives and itching due to hives.

Trials have shown both Allegra (fexofenadine) and Claritin (loratadine) are significantly more effective than placebo (a pretend pill) for reducing symptoms associated with allergic rhinitis, hay fever, and other allergies.

Newer antihistamines like Allegra and Claritin are generally safe for daily use. But allergy medications with decongestants, such as Claritin-D or Benadryl-D, could make your allergies worse with long-term use.

Newer antihistamines like Allegra and Claritin are generally safe for daily use. But allergy medications with decongestants, such as Claritin-D or Benadryl-D, could make your allergies worse with long-term use.

Do not take fexofenadine with fruit juice (such as apple, orange, or grapefruit). These juices can make it harder for your body to absorb fexofenadine. Avoid taking an antacid within 2 hours before or after you take fexofenadine.

Allegra and Zyrtec are common over-the-counter drugs used to treat allergy symptoms. Both drugs are safe and effective, but studies show Zyrtec's effects may last longer than Allegra's. Zyrtec is more likely to cause drowsiness. Drinking fruit juices can make Allegra less effective.

Allegra Allergy vs. Allegra® has a key advantage over Zyrtec - it provides allergy-symptom relief without making you drowsy. In fact, Allegra® is the #1 allergist recommended brand for non-drowsy relief. § Unlike Zyrtec,‡ Allegra® offers an antihistamine with an active ingredient that won't cause drowsiness.

Several forms of Allegra are available. Allegra 24-hr is a 180mg tablet taken once a day. Allegra 12-hr is a 60mg tablet taken twice a day. Allegra D contains both fexofenadine and pseudoephedrine (a decongestant).