When taken in small amounts caffeine is harmless, itâ€™s even considered beneficial; although, when taken excessively or in large doses for an extended period of time it has been proven to be detrimental.
2.Decaffinating to make artificial sources
II. Uses for caffeine
III. Side- effects
A. Positive and negative
Caffeine is the most widely used drug in America. It operates using the same mechanisms that amphetamines, cocaine, and heroin use to stimulate the brain, but the effects are milder. When taken in small amounts caffeine is harmless, itâ€™s even considered beneficial; although, when taken excessively or in large doses for an extended period of time it has been proven to be detrimental (Perry 45-54).
Caffeine has been used for thousands of years in many different parts of the world. It is a nitrogenous organic compound of the alkaloid group; it is odorless and tasteless. Trimethylxanthine, pure caffeine, occurs as a white crystalline powder or as silky needles (â€śCaffeineâ€ť 720). Caffeine is classified as a stimulant; it starts working after fifteen to forty-five minutes and lasts from two and a half hours to seven and a half hours. It takes, at least, thirty hours for caffeine to completely leave your system. With caffeineâ€™s stimulating effect, it leads people to be dependant and later addicted (Price21-26).
Caffeine is found naturally in over sixty-three plants. The four most common are tealeaves, coffee beans, chocolate, and cola nuts. Tea became popular in the mid 1600â€™s, when Dutch and British traders brought it home with them. With the average adult not needing over 300mg per day, tea contains only 80mg (depending on strength) per 12- ounce cup. Coffee is derived from the beans of the coffee tree. In the United States and Canada, over o...