[stefanmichael]

If you ever want a very real anxiety attack drink half of a redline without any caffeine tolerance. If you want to die, drink an entire redline.

I tried it once in college and it blew my mind that something like that was available off the shelf.

[matwood]

I came here to write this same comment, and I have a caffeine tolerance. Redline is the pot candy bar of caffeine. It's a tiny bottle and if you don't read the side that says drink 1/2 or less too start, you can end up in a pretty bad state.

But it's still nothing compared to Ripped Fuel in the 90s. In college I could take a couple of those, lift hard for 2 hours, shower and then party all night like it was no big deal.

https://www.livestrong.com/article/32157-ripped-fuel-work/

> Thermogenic dietary supplements, more commonly known as weight-loss supplements, were classically made up of ephedrine, caffeine and aspirin, known as the ECA stack (ephedrine, caffeine and aspirin).