Generic drug availability, manufacturer information, and patent status on Allegra
- A generic version of the 24-hour strength of Allegra-D is now available. This section of the eMedTV library talks about generic Allegra-D in more detail, addressing.
- Generic drug availability, manufacturer information, and patent status on Allegra.
- Fexofenadine and pseudoephedrine Allegra-D drug side effects, dosage, pregnancy safety, and drug interaction information.
- Jul 19, 2007 Generic Allegra D 12 hours is not available in the U.S., generic Claritin D 24 hours is available behind the pharmacy counter but you will have to ask for it.
- Generic for Allegra-D is an antihistamine and decongestant medication that relieves seasonal allergy symptoms such as sneezing, watery or itchy eyes, runny nose.
Allegra-D Oral tablet, extended release 12 hour drug summary. Find medication information including related drug classes, side effects, patient statistics and answers.
DRUG CLASS AND MECHANISM: Allegra-D is a combination of an antihistamine (fexofenadine) and a decongestant (pseudoephedrine). Fexofenadine is an oral, "second generation" antihistamine that is used to treat the signs and symptoms of allergy and hives. It is similar to the other second generation antihistamines loratadine (Claritin), cetirizine (Zyrtec) and azelastine (Astelin). Histamine is a chemical that is responsible for many of the signs and symptoms of allergic reactions, for example, swelling of the lining of the nose, sneezing, and itchy eyes. Histamine is released from histamine-storing cells (mast cells) and then attaches to other cells that have receptors for histamine. The attachment of the histamine to the receptors causes the cell to become "activated," releasing other chemicals that produce the effects that we associate with allergy (for example, sneezing). Fexofenadine blocks one type of receptor for histamine (the H1 receptor) and thus prevents activation of H1 receptor-containing cells by histamine. Unlike the first generation antihistamines, fexofenadine and other second-generation antihistamines do not readily enter the brain from the blood. Therefore, they cause less drowsiness and are called non-sedating antihistamines. Pseudoephedrine causes blood vessels in the nasal passages to narrow (vasoconstrict). Vasoconstriction reduces nasal congestion by preventing fluid from draining from blood vessels into nasal passages. The FDA approved Allegra-D in December 1997. Report Problems to the Food and Drug Administration You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.','url':'http://www.medicinenet.com/fexofenadine_and_pseudoephedrine/article.htm','og_descr':'Fexofenadine and pseudoephedrine (Allegra-D) drug side effects, dosage, pregnancy safety, and drug interaction information.