Medical Definition of Opioid antagonists

1. Agents such as naloxone and naltrexone which have high affinity for opiate receptors but do not activate these receptors. These drugs block the effects of exogenously administered opioids such as morphine, heroin, meperidine, and methadone, or of endogenously released endorphins and enkephalins. (05 Mar 2000)

Lexicographical Neighbors of Opioid Antagonists

opining
opinion
opinionated
opinionatedly
opinionatedness
opinionative
opinionatively
opinioned
opinions
opinion poll
opioid
opioid
opioid-related disorders
opioids
opioid agonist
opioid antagonists (current term)
opioid partial agonist
opioid peptides
opioid receptor
opiomelanocortin
opipramol
opipramol hydrochloride
opisthenar
opisthiobasial
opisthion
opisthionasial
opistho-
opisthobranch
Opisthobranchia
opisthobranchiata

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