text: <unk>  is a _______ drug that is FDA approved for the treatment of _______. There is a Black Box Warning for this drug as shown here. Common adverse reactions include _______.
option_0: Lanoxin tablet
option_1: Demadex tablet
option_2: WELCHOL tablet
option_3: Transcutaneous pacing
option_4: Polyethylene glycol-electrolyte solution 
option_5: Quinapril hydrochloride and hydrochlorothiazide tablet
option_6: Multielectrode array
option_7: Digoxin immune fab