<unk> (nasal) is an antihistamine that is FDA approved for the treatment of allergic rhinitis.   Common adverse reactions include abnormal taste in mouth, bitter, headache, somnolence, burning sensation in eye, epistaxis, nasal irritation, pharyngitis, rhinitis, sneezing, and fatigue.
Azelastine 
Seratrodast
Pemirolast
Epinastine hydrochloride
Clemastine
Bepotastine Besilate
Montelukast
Acrivastine