Unfortunately not all drugs are as safe and socially acceptable as caffine. These pages are here to provide facts, not moral judgements, so that you have the information to decide for yourself. It is also important to remember that some legal drugs are more dangerous that some illegal ones. You cannot say that it is alright to use a drug just because it is legal. Too much of any drug will kill you and alcohol is responsible for more deaths every year in the U.K. than all the others put together.
Some drugs can do both.
Drugs can basically be put into four catagories. These are outlined below. Also called uppers. They can increase heart rate and alertness. Caffine is an example.