Bang Energy Drink contains 300mg of caffeine per can. This is roughly equivalent to three cups of coffee. Caffeine is a stimulant that can improve focus, alertness and physical performance. However, excessive caffeine intake can lead to side effects such as jitters, increased heart rate and trouble sleeping. It is important to drink caffeinated beverages in moderation and be aware of personal tolerance levels. Order Now! Shipping free. https://bangenergy.com/shop/bang-12-pack/