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MS Contin, Kadian
Opioid • Natural opioid agonist
Agonist at mu-opioid receptors
Drug Class
Opioid
Subclass
Natural opioid agonist
Half-life
2-4 hours
Time for plasma concentration to decrease by 50%
Protein Binding
35%
Fraction bound to plasma proteins
Therapeutic Index
Narrow
Margin between therapeutic and toxic doses