This section of the site has extensive information about drugs. Most psychoactive drugs fall into the categories of stimulants, depressants, opiates and hallucinogens. All these types of drugs are addictive, induce dependence and have different effects on the human brain and body. - See more at: http://www.castlecraig.co.uk/resources/drugs/types-drugs#sthash.4slLdVnF.dpuf