I went to er my nose stuffy throat soar itches doc said its my allergies he gave me allegra (fexofenadine) 180mg can i take it again before 24hrs? taking shots again

Nasal steroid: Have you tried an nasal steroid spray? If an oral antihistamine is not taking care of your symptoms then consider adding a nasal spray daily.

One per day: "No statistically significant increase in mean QTc interval compared to placebo was observed in 714 adult subjects with seasonal allergic rhinitis given ALLEGRA (fexofenadine hydrochloride) capsules in doses of 60 to 240 mg twice daily for 2 weeks." At least take them 12 hours apart and only one tablet per day as recommended. A QTc interval increase predisposes to cardiac arrthymias.

Yes, on a blind date: It won't kill you but don't overdo it. Everyone is a unique individual and sometimes have to find their particular dose, but you have to be careful doing this. In the case of these drugs, you'll know you took too much if you get too sleepy, with a dry mouth and maybe some blurred vision, but then, you could go out on a blind date! (oops, I wouldn't suggest that, stoned on Allegra (fexofenadine)...)

Just once a day: Taking more than the recommeded dose or frequency will not be over all beneficial. Dizziness, drowsiness, and dry mouth have been reported with ALLEGRA (fexofenadine hydrochloride) overdose.