Not only does it suck that everything I've researched has caffeine, but no companies even tell you how much caffeine is in there. Is it 50mg? is it 200mg? Fuck, I don't know. I try to minimize my caffeine intake for the most part, and I work out at night, so I don't want 11ty billion mg of caffeine after 5 or 6pm since I already have no tolerance to it. So does such a product exist?