The present study represents an open-label clinical trial comparing treatme
nt with a benzodiazepine (lorazepam) to divalproex in 11 inpatients with un
complicated alcohol withdrawal syndrome. The trial used the Clinical Instit
ute Withdrawal Assessment for Alcohol-Revised (CIWA-Ar) scale. There were n
o significant differences in demographics or substance use parameters betwe
en the divalproex group (n = 6) or the lorazepam group (n = 5). A significa
nt Group x CIWA-Ar score interaction [F(8,72) = 2.57, p less than or equal
to .01] was confirmed and further substantiated by a quadratic trend compon
ent for the interaction [F(1,9) = 24.9, p less than or equal to .001]. This
preliminary study supports further investigation of divalproex in the trea
tment of alcohol withdrawal.