“… ethanol … injectable nitroglycerin is potentially hazardous, because of the possibility of cardiodcpression, arrhythmias and/or coronary vasospasm; neurotoxicity and depression of the central nervous system; hyperosmolality, … in patients with diminished renal function; interaction with disulfiram and compounds with a disulfiram-like action; interaction with oral antidiabetics and with heparin.”