What means dream a drug
Psychoactive drugs are chemical substances that affect the function of the nervous system, altering perception, mood or consciousness. Alcohol, nicotine, and caffeine are the most widely consumed psychoactive drugs worldwide. Some drugs can cause addiction and habituation and all drugs can cause side effects.
Many drugs are illegal for recreational purposes and international treaties such as the Single Convention on Narcotic Drugs exist for the purpose of legally prohibiting certain substances.
an illegal and often harmful substance (such as heroin, cocaine, LSD, or marijuana) that people take for pleasure