200mg Caffeine is the average standard amount in stim based weight loss products. However, Products containing DMAA, as Pyro RX does, often times contain between just 80mg to 150mg caff per serving. Ingredients are usually listed from most abundant, to least and Caffeine is listed second on the Pyro RX ingredients list, so it's high up there. That being said, Pyro Rx is chalk loaded full of other forms of stims, so they might not rely on a heavy caff base for a stim effect. If I had to guess, I'd guesstimate minimum 80mg, maximum 150mg, however, as a general rule of thumb, it's best to avoid other forms of stims while taking a product like this, but that being said, I wouldn't worry about one cup of coffee in the middle of the day.