Curious about the caffeine in espresso? This article provides a clear answer. Discover the concentration of caffeine in a shot of espresso and variations like ristretto and lungo. Understand the factors affecting caffeine content and the extraction process. Learn about different types of espresso shots and their caffeine levels. Explore the caffeine comparison to coffee and energy drinks. Find out how much caffeine is considered safe and the potential health effects. Discover the process and caffeine content in decaf espresso. Consider personal factors like metabolism, body mass, and tolerance. Make informed choices and enjoy espresso responsibly.