Aside from simply getting more sleep, the best single treatment for sleep deprivation may be caffeine. This naturally occurring stimulant is found in many common foods and drinks, including coffee, tea, soda pop and chocolate. It is very effective in increasing alertness. There may be some minor side effects, such as headache in periods of withdrawal or tremor when used in excess, but caffeine is remarkably well tolerated. It is widely available and relatively inexpensive, making it a reliable and often used remedy for sleep deprivation. In general, caffeine is best used in small amounts consumed frequently at intervals throughout the wakeful period.