<unk>  is a nasal decongestant, opthalmologic agent that is FDA approved for the treatment of nasal congestion, ocular irritation in conjunctivitis.   Common adverse reactions include headache, insomnia, feeling nervous, rebound nasal congestion, dry nasal mucosa , nasal stinging/burning, sneezing.
Oxymetazoline
Tolazoline
Tymazoline
Imidazoline
Xylometazoline
Tramazoline
Moxaverine
Methylergonovine 