The other nite I took my usual slo-niacin (Upsher-Smith brand) at 10:30. I also take a B-complex, Sam-e. Earlier in the evening I had consumed a bottle of champagne over a 6-hour period. I woke at 3:30 a.m., itchy, prickly hot. Got up and felt dizzy. Sat on the toilet. The next thing I remember, my husband was yelling at me, squeezing my hands, asking me what was wrong. I had lost consciousness, was shaking, hands clenched at my chest and had vomited. I don't remember anything past feeling abit dizzy. My husband said I did not respond, even when I opened my eyes, and I was apparently moaning loudly, which is what woke him up. It lasted about 20 minutes.
The next day I was fine. I am 63 years old and have no history of heart or any other health problems.