Cocaine is illegal and addicting. An overdose of cocaine can be fatal. Its damaging effects on the central nervous system increase greatly when it is taken with other stimulants such as amphetamines, appetite suppressants, or caffeine. Medical experts have documented no benefits from the use of cocaine among athletes. This is the addicting factor in tobacco smoke that makes smoking cessation so difficult for many persons.
Nicotine causes constriction of peripheral blood vessels.
It also causes an increase in heart rate that does not result in increased cardiac output. The result of these two effects is increased fatigue and diminished athletic performance. All effective medications have potential side effects for at least some individuals. Your child should not expect to be able to perform at his accustomed level if he is taking any medication. Safety precautions for athletes are similar to those for the general population.