Caffeine belongs to a class of compounds called
. Other methylxanthines include theobromine (found in chocolate) and theophylline (found in tea, and sometimes used in the treatment of asthma).
How much caffeine is in a cup of coffee?
The Coffee and Caffeine FAQ
What are the other ingredients in coffee?
What are some other natural sources of caffeine?
Effects of caffeine on humans
Is caffeine a source of energy? (in humans)
Prolonged use of caffeine on one's metabolism.
Caffeine's effects on muscles and tremors.
What effects does 100mg of caffiene have on the pulse, and why?
Does decaffeinated coffee raise blood pressure?
What are the by-products of caffeine in the urine?
How exactly does caffeine affect heart rate?
Effects of Caffeine on Plants
Caffeine's effect on the growth of plants.
What are the effects of caffeine on plants?
Effect of caffeine on germinating seeds.
Why did the plant I am feeding with coffee grow then wither and die?
Effects of Caffeine on
How, and why does caffeine affect the rate of a Daphnia's heart?