the effects of age and associated therapy on plasma primidone ( prm ) and derived phenobarbital ( pb ) concentrations , and on plasma concentrations-to-prm dose ratios ( l/d ratio ) were evaluated retrospectively from 408 consecutive prm and derived pb determinations in 238 chronically treated epileptic patients ( 153 children and adolescents between 5 months and 15 years of age and 85 adults between 16 and 55 years of age ) .
C0033148
prm
C0014544
epileptic