Fexofenadine HCl 860 mg tablet?

Does not exist. The highest dose in the us is 180mg, in europe they have it in 240mg, the safety was studied up to 320mg, anything higher has not been established safe.
Antihistamine. Fexofenadine (allegra) is a new generation antihistamine for treating allergies and hives. It comes as a 180 mg tab, 60 mg tab and 30 mg meltable tablet and liquid 30 mg/5 ml. There is no 860 mg tablet.