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Revia, Vivitrol
Opioid antagonist • Mu-opioid receptor antagonist
Half-life
4 hours (active metabolite 12 hours)
Protein Binding
21%
Metabolized By
Dihydrodiol dehydrogenase
External
Drugs.comCompetitively antagonizes opioid receptors; reduces alcohol craving through unknown mechanism
Drug Class
Opioid antagonist
Subclass
Mu-opioid receptor antagonist
Half-life
4 hours (active metabolite 12 hours)
Time for plasma concentration to decrease by 50%
Protein Binding
21%
Fraction bound to plasma proteins
Therapeutic Index
Wide
Margin between therapeutic and toxic doses