What is your preferred, first-line class of anti-anginals for MINOCA with proven epicardial coronary vasospasm?

We typically start with long-acting nitrates such as isosorbide mono or dinitrate, but often patients will have adverse effects to nitrates that make long-term use challenging. We have had good results with non-dihydropyridine calcium channel blockers, particularly diltiazem, both as short and long-...