With rising popularity of energy drinks (supermarket shelves contain dozens of different brands), exactly how much caffeine can you safely consume? Caffeine-centric blog Energy Fiend has the answer.
Use the death by caffeine calculator to see how many cans of Red Bull or Coke you can drink before keeling over. If you're a real caffeine addict, you can use these two pieces of information to figure out a caffeine dosing schedule to keep your body at peak caffeine levels without overdosing (Note: Not Recommended).Caffeine takes a certain amount of time to work through your system. One study some years ago showed that the half-life of caffeine in healthy adults is 5.7 hours (see source). This means if you consume 200mg of caffeine at mid-day, you would still have 100mg in you at around 5.45pm.
The same study showed that people with compromised liver function had a significantly longer half-life (a 49-year-old woman having alcoholic hepatic disease had a serum half-life of 168 hours).
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