In one 4-week, multicenter, randomized, double-blind, placebo-controlled clinical trial in subjects 12 years of age and older with chronic idiopathic urticaria (n=259), fexofenadine hydrochloride 180 mg once daily significantly reduced the mean number of wheals (MNW), the mean pruritus score (MPS), and the mean total symptom score (MTSS, the sum of the MPS and MNW scores). After administration of a single 60 mg capsule to healthy subjects, the mean maximum plasma concentration (Cmax) was 131 ng/mL. Fexofenadine hydrochloride is a white to off-white crystalline powder. Because the absolute bioavailability of fexofenadine hydrochloride has not been established, it is unknown if the fecal component represents primarily unabsorbed drug or the result of biliary excretion. Human mass balance studies documented a recovery of approximately 80% and 11% of the [14C] fexofenadine hydrochloride dose in the feces and urine, respectively. There were no significant differences in the effect of fexofenadine hydrochloride across Allegra D Line of subjects defined by gender, age, and race. Two 2-week multicenter, randomized, placebo-controlled, double-blind trials in 877 pediatric subjects 6 to 11 years of age with seasonal allergic rhinitis were conducted at doses of 15, 30, and 60
Allegra 12 Hour twice daily. Pharmacokinetics in renally and hepatically impaired subjects and geriatric subjects, obtained after a single dose of 80 mg fexofenadine hydrochloride, were compared to those from healthy subjects in a separate study of similar design.
The clinical significance of these findings is unknown. In these studies, there was no additional reduction in total symptom scores with higher doses of fexofenadine hydrochloride up to 240 mg twice daily. Moreover, no sedative or other central nervous system effects were observed.
Similar reductions were observed for mean number of wheals and mean pruritus score at the end of the 24-hour dosing interval.
The mean elimination half-life of fexofenadine was 14.4 hours following administration of 60
Where Buy Allegra D twice daily in healthy subjects. Following single dose oral administrations of either the 60 and 180 mg tablet to healthy adult male subjects, mean Cmax were 142 and 494 ng/mL, respectively. The administration of 30 mg ALLEGRA Oral Suspension with a high fat meal decreased the AUC and the mean Cmax by approximately 30 and 47%, respectively in healthy adult subjects.