Pharmacology Which of the following drugs has been used in the treatment of angina by inhalation and has a very rapid onset and brief duration of action? A Amyl nitrite B Isosorbide mononitrate C Nitroglycerine D Propanolol 💡 Explanation Which of the following drugs has been used in the treatment of angina by inhalation and has a very rapid onset and brief duration of action? ✓ Correct Answer: A. Amyl nitrite