Inorganic Nitrate as a Treatment for ANOCA: NO-ANOCA

Inclusion Criteria: * Age ≥18 years. * Female sex. * Willing and able to provide written informed consent. * Signs and symptoms of suspected ischemia prompted referral for further evaluation by cardiac catheterization or CCTA within two years of consent. * No evidence of obstructive epicardial CAD (stenosis \>50%) of a major epicardial vessel or an FFR ≤0.80 by invasive catheterization or CCTA. Patients who have not undergone cardiac catheterization of CT angiogram within the last 2 years for chest pain can be scheduled for a screening CT angiogram of the coronary arteries to confirm eligibility. * Impaired coronary flow reserve (cut-off values depending on methodology use between ≤2.0 and ≤2.5 by stress testing PET/CMR or Invasive assessment) or Abnormal index of coronary microcirculatory resistance (e.g., IMR \> 25) * SGLT2i Naïve Exclusion Criteria: * History of non-ischemic cardiomyopathy LVEF \<40% or hypertrophic cardiomyopathy. * History of congestive heart failure, severe pulmonary disease, liver disease * History of acute coronary syndrome (ACS) within previous 30 days * Stroke within the last 180 days or intracranial hemorrhage at any time. * Severe valvular disease * Life expectancy \<3 years, due to non-cardiovascular comorbidity. * Pregnancy or women who are breast-feeding * Type 1 diabetes mellitus * Symptomatic hypotension or systolic BP\<95 mmHg on 2 consecutive measurements * Active malignancy requiring treatment at the time of visit * Severe (eGFR \<30 mL…