The caffeine content of Ultra Coffee can vary slightly, between 140-150mg per tablespoon. The range is due primarily to the natural variation in soils, climate and the precise time of the harvest. By comparison, the average cup of coffee can range from as little as 75mg to as much as 200mg per cup. This is due to a wide number of variables including coffee bean source, roast profile, amount of coffee used, brew times, brew temperatures and brew method. With Ultra Coffee, we recommend you start with just one tablespoon and see where it takes you.