Neuropharmacology is the study of how drugs affect the nervous system and behavior. It explores the interactions between medications and neurotransmitters, which are chemicals that transmit signals in the brain. This field helps researchers understand how different substances can alter mood, perception, and cognitive functions. Researchers in neuropharmacology investigate both therapeutic and harmful effects of drugs. They aim to develop new treatments for neurological disorders, such as depression, anxiety, and schizophrenia. By understanding the mechanisms of action, scientists can create more effective medications with fewer side effects.