Ketamine is a dissociative anesthetic medication that is used primarily for anesthesia and pain management in medical procedures. However, in recent years, it has gained attention for its potential use in treating mental health conditions, particularly treatment-resistant depression. Research in this area has shown that ketamine may have rapid-acting antidepressant effects, with some studies reporting significant improvements in mood symptoms within hours of administration. It is believed that ketamine works by modulating glutamate neurotransmission in the brain, leading to changes in synaptic plasticity and mood regulation. While more research is needed to fully understand its mechanisms of action and long-term effects, ketamine therapy has shown promise as a potential alternative treatment for individuals who do not respond to traditional antidepressant medications.