Terfenadine
Brand names,
Terfenadine
Analogs
Terfenadine
Brand Names Mixture
Terfenadine
Chemical_Formula
C32H41NO2
Terfenadine
RX_link
http://www.rxlist.com/cgi/generic/terfen.htm
Terfenadine
fda sheet
Terfenadine
msds (material safety sheet)
Terfenadine
Synthesis Reference
A. A. Carr, C. R. Kinsolving, U.S. Pat. 3,878,217 (1975)
Terfenadine
Molecular Weight
471.673 g/mol
Terfenadine
Melting Point
146.5-148.5oC
Terfenadine
H2O Solubility
10 mg/L
Terfenadine
State
Solid
Terfenadine
LogP
7.784
Terfenadine
Dosage Forms
Oral tablets
Terfenadine
Indication
For the treatment of allergic rhinitis, hay fever, and allergic skin disorders.
Terfenadine
Pharmacology
Terfenadine, an H1-receptor antagonist antihistamine, is similar in structure to astemizole and haloperidol, a butyrophenone antipsychotic. The active metabolite of terfenadine is fexofenadine.
Terfenadine
Absorption
On the basis of a mass balance study using 14C labeled terfenadine the oral absorption of terfenadine was estimated to be at least 70%
Terfenadine
side effects and Toxicity
Mild (e.g., headache, nausea, confusion), but adverse cardiac events including cardiac arrest, ventricular arrhythmias including torsades de pointes and QT prolongation have been reported. LD50=mg/kg (orally in mice)
Terfenadine
Patient Information
Terfenadine
Organisms Affected
Humans and other mammals