** Warning this is just a medical student thought

this is my idea

why not to use something like nicotine for ttt of angina,
I mean the attack it self,
knowing that sympathetic and parasympathetic supply for the heart are vasodilators
using sympathomimetics are not wise as they increase the heart work and needs for oxygen.
on the othe hand parasympathomimetics decrease heart work and oxygen needs, yet remain vasodilators on coronaries

I knew there is chewable nicotine for anginal attack but is now obsolete due to addiction.