After I wrote that I started feeling terrible a little bit later like I was going to collapse. I have a problem with low blood pressure and wouldn't you know it stevia lowers blood pressure. Won't be using that again!
PS: Something else that lowers blood pressure is hibiscus. I bought this Celestial Seasonings iced tea cold brew teabags that would make me black out nearly every time I drank it. Took me awhile to figure out what was causing it. Turns out the Hawaiians had used hibiscus as a way of lowering BP for decades. Just because its natural doesn't mean its necessarily safe for everyone.