GR-
Back then wasn't there ephedra in it?
I know ephedra is legal once again but the current Ripped Fuel Extreme doesn't contain ephedra. I use it myself as an energy booster. The main active ingredient in it is craploads of caffeine. That's how they assume you'll get 'ripped abs' is just by having so much energy you'll burn fat by all the work you'll put your body through.
I know I'm not going to get 'ripped abs' from the product even though it is the only product that 'guarantees ripped abs'
Like I said, it is good to light a flame under your arse when you don't have the motivation to work out.
Arrhythmias can still occur from large doses of caffeine I would assume. So as GR said, see how it works for you, you may not like it or it may work for you.
Watch out for caffeine addiction, it's a bitch to come off of.