We asked experts. Caffeine is the main active ingredient associated with coffee and may very well be the reason most people drink coffee in the first place. But there are more than a thousand ...

The singer said she kicked her caffeine habit over Christmas, but uses several prescription medications to manage her bipolar disorder Gilbert Flores/Variety via Getty Chappell Roan said she quit ...

and caffeine tablets between 50mg and 100mg.) To have an impact on performance, research points to 3mg-6mg of caffeine per kilo of bodyweight being the target range. Dr Rob Naughton, a performance ...

Phizz is launching Phizz Daily Energy just in time for summer, when more people will need hydration following weekends at festivals and evenings relaxing with alcohol in the sunshine.