India, Dec. 19 -- Energy drinks are omnipresent in modern-day supermarkets and most grocery shops. These drinks, which allegedly provide an instant boost of energy, contain caffeine as the main ingredient.

According to the National Library of Medicine, the first such drink introduced in the American market was Dr Enuf in 1949. Europe had to wait till 1987 for their first 'energy' drink. The popularity of these drinks surged after the launch of the famous 'Red Bull' in 1997.

The National Library of Medicine's website reveals that the annual consumption of such energy drinks was more than 5.8 billion litres in 2013. These drinks, marketed as a great source of energy at short notice, are very popular with teenagers and youngsters. Further,...