A typical daily caffeine intake varies considerably, generally falling between 100 and 400 milligrams. This quantity is often found in common beverages like coffee, tea, and energy drinks. For instance, a single cup of brewed coffee can contain between 95 and 200 milligrams, while a 12-ounce can of cola might have 30 to 40 milligrams.
Understanding usual consumption levels is vital for maintaining health and well-being. Caffeine, a central nervous system stimulant, can enhance alertness, improve mood, and even boost athletic performance. However, excessive intake can lead to anxiety, insomnia, and other undesirable side effects. The recommended daily limit for most adults is 400 milligrams. Historically, caffeine-containing substances like coffee and tea have been consumed for their perceived medicinal and stimulating properties, evolving from traditional remedies to everyday staples.