Hard and soft drugs
Soft drugs are not thought to cause physical or psychological addiction or dependence to the extent of hard drugs, however they are still considered unsafe. Examples of soft drugs are hallucinogens like cannabis, mescaline, psilocybin, LSD, ayahuasca, iboga, and DMT. While they do not cause physical addiction, some of them may still lead to psychological dependence. There is some evidence suggesting some hallucinogens have therapeutic uses.