Allegra relieves the itchy, runny nose, sneezing, and itchy, red, watery eyes that come with hay fever. It is also used to relieve the itching and welts of hives. Allegra is a type of antihistamine that rarely causes drowsiness.
In addition to the antihistamine in Allegra, Allegra-D also contains the nasal decongestant pseudoephedrine.
Seldane, an antihistamine related to Allegra, has been implicated in dangerous interactions with the common antibiotic erythromycin, the antifungal medication ketoconazole, and several similar drugs. Allegra poses no such risks. It is also safe for people with liver disease.
- throat irritation;
- respiratory tract infection;
- pain including back or ear pain;
- nervousness;
- nausea;
- menstrual problems;
- insomnia;
- indigestion;
- heart palpitations;
- headache;
- fever;
- fatigue;
- dry mouth;
- drowsiness;
- dizziness;
- coughing;
- back pain;
- anxiety;
- agitation;
- colds or flu;
- abdominal pain;
ALLEGRA
Adults and Children 12 Years and Older
For hay fever, the usual dosage is 60 mg twice a day or 180 mg once a day. For hives, it's 60 mg twice a day. If you have kidney problems, your doctor may have you take only one 60-mg dose daily.
Children 6 through 11 years old
For hay fever or hives, the usual dosage is 30 mg twice a day. Children with kidney problems may be prescribed only one 30-mg dose each day.
ALLEGRA-D
Adults and Children 12 Years and Older
12-Hour Tablets: Take 1 tablet twice a day. People with kidney problems should take only 1 tablet daily.
24-Hour Tablets: Take 1 tablet once a day. Allegra-D 24-hour tablets should generally not be taken by people with kidney problems.
Allegra-D is not recommended for children less than 12 years old.
