<unk> (oral) is a calcium channel blocker that is FDA approved for the treatment of chronic stable angina and angina due to coronary artery spasm (tablet or capsule), hypertension (capsule only), atrial fibrillation or atrial flutter, and paroxysmal supraventricular tachycardia (injection only).   Common adverse reactions include bradyarrhythmia, peripheral edema, dizziness, headache, cough, and fatigue.
Diltiazem 
Bisoprolol
Carvedilol
Digitoxin
Endralazine
Amiodarone 
Metoprolol succinate 
Digoxin