Oxycodone is an opioid pain medication used to treat moderate to severe pain. Includes oxycodone side effects, dose, reviews, warnings, and more. Generic name: fexofenadine [ FEX-oh-FEN-a-deen ] Brand names: Allegra 12 Hour Allergy, Allegra 24 Hour Allergy, Allegra Allergy, Allegra OTC, Aller-Ease, ... show all 8 brands Dosage forms: oral suspension, oral tablet , oral disintegrating tablet Drug class: Antihistamines Medically reviewed by Carmen Pope, BPharm. Last updated on Jan 21, 2025. Uses Warnings Before taking Dosage Side effects Interactions FAQ What is fexofenadine? Fexofenadine is an antihistamine that may be used to treat ... An example of this naming convention is metformin hydrochloride , a salt form where the active ingredient is metformin, the salt (with no therapeutic action) is hydrochloride , therefore this medicine is referred to as "metformin". Why are drugs called by both their “parent drug name” and “salt” name? Hydrochloric acid, also called muriatic acid, is a clear, colorless and extremely pungent solution of hydrogen chloride in water. The...