It's a prop blend so I don't think they will give out the exact figure but I've taken Shred Ultra a couple of times and am pretty caffeine sensitive and I don't have any problems with it. Based non my feelings with other caffeine products where I know the caffeine amount I would say that each tab has about 100mg caffeine. The recommended dose is 2 tabs and normally 200mg caffeine is the most that will be in any fat burner dose so 100mg per tab will be about right.
I normally take 3 a day (6am, 10am, 2pm) and this keeps me going all day. After the ECA stack this is my favourite fat burner. Great mood enhancement, good appetite suppression (doesn't kill the appetite but does suppress it a fair amount), fantastic value when you only take 3 caps per day and good ingredients (PEA, forskolin, Raspberry ketones).