Psychotropic substances are chemicals that affect the mind and behavior. They can alter mood, perception, and cognitive functions. These substances include a variety of drugs, such as antidepressants, anxiolytics, and hallucinogens, which are often used in medical settings or recreationally. These substances can be classified into different categories based on their effects. For example, stimulants increase alertness and energy, while depressants can induce relaxation and sedation. Understanding the effects and potential risks of psychotropic substances is important for both health professionals and individuals considering their use.