Mainly a really fast heart beat. That can usually kill you
caffeine is not a disease
intoxication
Alcohol intoxication is a state when there is enough ethanol in your body to have an effect - usually the symptoms of euphoria, a certain degree of lethargy, impaired vision, balance, and judgement will be the prime signs of intoxication.
Some people have suffered from caffeine intoxication, the product labels do not offer the user specific information as to the caffeine content and some public health agencies have been requesting clarification
There are several types of intoxication which include Substance intoxication as a general bracket term, under which are included: Alcohol intoxication LSD intoxication Tobacco intoxication Cannabis intoxication Caffeine intoxication Cocaine intoxication Water intoxication
depression
It all depends on how hyper you get on caffeine, it could immediately kick in or you could have to wait a few hours, you could even try it out by timing yourself when you do have it!
diabetic reactions, head injury, drug overdose
Heavy caffeine use can also lead to dependence. If the person then stops using caffeine abruptly, withdrawal symptoms may occur.
intoxication results in the liver being overloaded with toxins to flush. Dehydration additionally deprives the kidneys of carrier fluid in which to carry those toxins, plus alcohol worsens that state. So arguably, dehydration could worsen the symptoms of intoxication.
You get really hyper because it's loaded with caffeine and sugar.