<unk> (Sublingual tablet) is an anti-anginal vasodilator that is FDA approved for the treatment of angina pectoris due to coronary artery disease.   Common adverse reactions include hypotension, flushing, dizziness, headache, and lightheadedness.
Nitroglycerin 
Nitroprusside
Endralazine
Imolamine
Amrinone
Papaverine
Adenosine
Nadolol 