Current diagnosis of any substance dependence other than alcohol, nicotine, or cannabis.

Evidence of opiate use in the past 30 days.

Significant risk of violence or history of serious violent behavior during the past year.

Continued contact with an intimate partner if assault by the partner is the index trauma.

Changes in dosage or medication for any SSRI treatment in the three months prior to entering the study.

Unstable or serious medical illness.

Current severe psychiatric symptom.

Mental retardation or another pervasive developmental disorder.

Use of an investigational medication in the past 30 days.

Pregnant, nursing or not using reliable contraception.

Treatment for Alcoholism and Post-Traumatic Stress Disorder (Naltrexone)