Beneficial Effect of Caffeine

when used as a medicine, caffeine in stimulant beverages may be useful in the following cases:- - -----Fainting
- Headache

Undesirable Effects of Caffeine- Reduces performance capacity
- Cerebral hypoglycemia
- Addiction
- Abstinence syndrome
- Functional changes: stimulant beverages foster insomnia, gastritis and arrhythmia (alterations in cardiac rhythm)