<unk> (injection) is an alpha-1 adrenergic receptor agonist that is FDA approved for the treatment of hypotension, glaucoma, mydriasis induction, and uveitis.   Common adverse reactions include nausea, vomiting, headache, and nervousness.
Phenylephrine 
Methylergonovine 
Prazosin
Terazosin
Doxazosin
Trimazosin
Oxymetazoline
Tramazoline