Which 3 drinks have the most caffeine?
Coffee has the highest caffeine content, with 90 mg per 200 ml cup of brewed coffee. Espresso has around 80 mg per 60 ml. Black tea has about 28 mg per 50 ml, green tea slightly less. Energy drinks contain about 80 mg of caffeine per 250 ml serving and should carry a label warning when caffeine exceeds 150 mg/L. Yes, 1,000 mg of caffeine is too much. It may cause side effects like restlessness, nervousness, irritability, anxiety, fast heart rate, tremors, and vomiting.If your overall health is good and you don’t have any other health conditions, the most common signs you’re having too much caffeine include: Having trouble sleeping. Anxiety, restlessness or irritability. Experiencing stomach problems or heartburn.These include headaches and increased sleepiness. Caffeine also interacts with other chemicals in the brain. If you consume more than normal, some of these interactions are what make you feel “overcaffeinated. Your heart may race, or you can feel anxious or sick to your stomach.The reason is because caffeine “stimulates dopamine, which is a chemical in your brain that plays a role in pleasure motivation and learning. Low levels of dopamine can make you feel tired, moody and unmotivated, among other symptoms, she said.According to Dr. Joseph King, a primary care physician, “There are no strict guidelines on how much caffeine is too much. But 400 milligrams or less per day is generally safe.