intranasal ketamine
An intranasal formualtion of the synthetic cyclohexanone ketamine with analgesic and anesthetic activities. Although its mechanism of action is not well understood, ketamine appears to non-competitively block N-methyl-D-aspartate (NMDA) receptors and agonistically  bind to and activate opiod mu and sigma receptors, thereby reducing pain perception, inducing sedation, and producing dissociative anesthesia. 
| Code name: | PMI-150 | 
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