What are the side effects of caffeine overdose?

Christina Lackmann, 32, from Australia, recently died from a caffeine overdose, triggering discussions about the safe amount of caffeine for consumption. Meanwhile, the Daily Mail reported that Lackmann’s life could have been saved if help had arrived at the right time. She was numb and dizzy when she dialled the emergency services for help. However, the ambulance arrived nearly seven hours after she made the first call. A toxicology report later confirmed lethal levels of caffeine in her body.

The US Food and Drug Administration says that a healthy adult can consume up to 400 mg of caffeine in a day. This includes four to five cups of coffee, ten cans of cola and two energy drinks. However, these recommendations may not be suitable for everyone, depending on one's body weight, health condition, the components in medicines, and the way the body reacts to caffeine.

When does caffeine get dangerous?
Although up to 400 mg of caffeine is generally considered safe, more than this could be dangerous. Consuming more than 1200 mg of caffeine could lead to seizures. 1200 mg of caffeine is equivalent to approximately half a teaspoon of pure caffeine powder. Besides, caffeine tablets, powder and caffeine supplements increase the risk of caffeine overdose. In Lackmann’s case, the high amount of caffeine in her body was not because of drinking coffee. She had apparently taken caffeine tablets on the day she died.

Caffeinated food products
Energy bars, energy drinks, protein powder, chewing gum, ice cream and some medicines contain caffeine, although it may not be mentioned on the label. Therefore, it is essential to carefully read the label before starting a new energy drink or supplement.

Overdosing
Overdosing on caffeine may lead to discomfort, increased heart rate, a burning sensation inside the mouth, dry mouth, nausea, stomach discomfort, and headache. In some cases, caffeine overdose can cause vomiting, confusion, shivering, seizures or even death.

Mindfulness is key
Besides coffee, caffeine is often added to energy drinks, soft drinks, and chocolate supplements. Read the label carefully to know whether the product contains caffeine. If it's not clear, you could always contact customer care for more information. You should exercise caution when using new products, especially workout enhancers and energy boosters. Pure caffeine powder and tablets could be dangerous even in small doses, as they contain a high concentration of caffeine. Therefore, it is better to avoid such things and opt for safer options, such as a cup of refreshing hot coffee.