Ketamine

Ketamine hydrochloride is a potent N-methyl-D-aspartate (NMDA) receptor antagonist utilized primarily as a dissociative anesthetic and analgesic in both human and veterinary medicine. By disrupting sensory perception and modulating glutamate neurotransmission, it facilitates a state of detached sedation and profound pain relief while maintaining the patient’s cardiovascular stability and respiratory drive. Beyond its traditional surgical applications, ketamine is increasingly recognized for its rapid-acting antidepressant properties in managing treatment-resistant mood disorders; however, due to its potential for emergence reactions and psychological habituation, administration must be conducted under strict clinical supervision.