The drug is available over the counter and comes in tablet form. Allegra-D tablets are available in a 12-hour and a 24-hour strength. It is typically taken either once or twice a day, depending on the product.
Allegra-D is a combination medication that contains an antihistamine and a decongestant. These components work by blocking the effects of histamine (to relieve
allergy symptoms) and decreasing the swelling in the nasal passages (to improve nasal congestion).
While most people tolerate Allegra-D tablets well, side effects are possible. Some of the most common side effects that have been reported with this medicine include
back pain,
headache,
insomnia, and dry mouth.
(Click Allegra-D to learn more about the effects of Allegra-D, for details on when and how to take this medication, and to find out what you should discuss with your healthcare provider prior to starting treatment.)
