While the coffee and soft drink industries do finance some laboratory work on caffeine, there are also ... the 75-cent cup of perked joe, refills free, into a six-dollar extravaganza brewed ...
Apart from coffee and tea, it is also found in cola-flavoured soft drinks, vitamin and energy ... For example, sparkling water, caffeine-free floral tea or fruit teas, milk, freshly squeezed ...
Coffee is commonly used to increase alertness and work productivity. Synthetic caffeine is added to soft drinks, energy drinks, and products intended to reduce fatigue or promote weight loss.