Fasting glucose is a morning number, taken before you've eaten. Your spells hit hours after a meal, when nobody is testing. That's why so many women leave the ER, the ECG and the Holter with "everything is fine" and still feel like they're dying.
Look at your last labs. Not the summary, the actual page. A fasting glucose between 100 and 125, or an A1C between 5.7 and 6.4, often gets no comment at all. Regenis supports steady blood sugar in the hours between those tests, the hours your body actually lives through.