levallorphan
noun
lev·al·lor·phan
ˌlev-ə-ˈlȯr-ˌfan, -fən 
: a drug C19H25NO related to morphine that is used to counteract morphine poisoning
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“Levallorphan.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/levallorphan. Accessed 4 Oct. 2023.
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