Fexofenadine Hydrochloride
Brand names,
Fexofenadine Hydrochloride
Analogs
Fexofenadine Hydrochloride
Brand Names Mixture
- Allegra-D (Fexofenadine hydrochloride + Pseudoephedrine hydrochloride)
Fexofenadine Hydrochloride
Chemical_Formula
C32H39NO4
Fexofenadine Hydrochloride
RX_link
http://www.rxlist.com/cgi/generic/fexofen.htm
Fexofenadine Hydrochloride
fda sheet
Fexofenadine Hydrochloride
msds (material safety sheet)
Fexofenadine Hydrochloride
Synthesis Reference
S. H. Kawai et al., J. Org. Chem. 59, 2620 (1994)
Fexofenadine Hydrochloride
Molecular Weight
501.656 g/mol
Fexofenadine Hydrochloride
Melting Point
142.5 oC
Fexofenadine Hydrochloride
H2O Solubility
Slightly soluble
Fexofenadine Hydrochloride
State
Solid
Fexofenadine Hydrochloride
LogP
6.759
Fexofenadine Hydrochloride
Dosage Forms
Oral tablets; Capsules
Fexofenadine Hydrochloride
Indication
For management of Seasonal allergic rhinitis
Fexofenadine Hydrochloride
Pharmacology
Fexofenadine is a second-generation, long lasting H1-receptor antagonist (antihistamine) which has a selective and peripheral H1-antagonist action. Histamine is a chemical that causes many of the signs that are part of allergic reactions, for example, swelling of tissues. Histamine is released from histamine-storing cells (mast cells) and attaches to other cells that have receptors for histamine. The attachment of the histamine to the receptors causes the cell to be "activated," releasing other chemicals which produce the effects that we associate with allergy. Fexofenadine blocks one type of receptor for histamine (the H1 receptor) and thus prevents activation of cells by histamine. Unlike most other antihistamines, Fexofenadine does not enter the brain from the blood and, therefore, does not cause drowsiness. Fexofenadine lacks the cardiotoxic potential, since it does not block the potassium channel involved in repolarization of cardiac cells.
Fexofenadine Hydrochloride
Absorption
33%
Fexofenadine Hydrochloride
side effects and Toxicity
Side effects include dizziness, drowsiness, and dry mouth.
Fexofenadine Hydrochloride
Patient Information
Patients taking ALLEGRA tablets should receive the following information:
ALLEGRA tablets are prescribed for the relief of symptoms of seasonal allergic rhinitis or for the relief of
symptoms of chronic idiopathic urticaria (hives). Patients should be instructed to take ALLEGRA only as prescribed.
Do not exceed the recommended dose. If any untoward effects occur while taking ALLEGRA, discontinue use and consult
the doctor.
The product should not be used by patients who are hypersensitive to it or to any of its ingredients.
Patients should be told that this product should be used in pregnancy or lactation only if the potential benefit
justifies the potential risk to the fetus or nursing infant.
Patients should be advised to take the tablet with water. Patients should also be advised to store the medication
in a tightly closed container in a cool, dry place, away from children.
Fexofenadine Hydrochloride
Organisms Affected
Humans and other mammals