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PubMed Frezza M, Centini G, Cammareri G, et al
A single, intravenous or intranasal sub-anesthetic dose of ketamine, a non-competitive NMDA glutamate receptor channel blocker, produces a rapid onset of antidepressant response that can last several days in the majority of treatment resistant unipolar and bipolar depressed patients participating in a growing number of clinical trials 148150

Neurology 35, 100829

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