Caffeine is a central nervous system (CNS) stimulant of the methylxanthine category.It’s the world’s most generally consumed consciousness-altering drug. It is not like several different psychoactive substances, it’s legal and unregulated in nearly all components of the globe. There are various notable mechanisms of action to clarify the effects of caffeine. Caffeine is also said to have positive and negative health effects 1Caffeine’s properties as associate analgesic adjuvant with nonsteroidal anti-inflammatory drug drugs/acetaminophen are very well observed and documented for research purposes.2Caffeine use is increasing worldwide. The underlying motivations are mostly on improving concentration and memory power and improvement of physical performance . Caffeine-containing merchandise have an effect on the vascular system, with their positive inotropic and chronotropic effects, with their locomotive activity stimulation and anxiogenic-like effects. Thus, it’s of interest to look at whether or not these effects may be harmful for health. Moreover,caffeine related abuse and dependence have become a lot of and a lot of common and may result in intoxication due to caffeine, that puts people in danger for premature and unnatural death. 3 caffeine is one amongst the foremost wide consumed beverages, and a few studies have advised it’s to be associated with Cardio Vascular Disase (CVD), the leading reason behind poor health around the world 4Energy drinks contain a range of ingredients, however several of the top-selling brands embrace high doses of alkaloid(caffeine) and also the organic compound taurine. Energy drink consumption by youngsters has raised issues, because of potential alkaloid(caffeine) toxicity. A further risk has been noted among college-aged customers who consume energy drinks seems to be at higher risk of over-consumption of alcohol when the 2 drinks are consumed altogether. there’s differential and combinatorial effects of alkaloid(caffeine) and taurine on the developing brain.5Hence this survey study aims to know about the awareness of side effects due to caffeine intake amongst students.