A sample of 100 men accused of sexual assault on a child and referred to a forensic clinic were approached for assessment and treatment in a double blind study of MPA (Provera). A total of 48 men completed assessment and 18 agreed to participate in the drug trial. Only 11 completed a 3-month course of MPA or placebo therapy. Those refusing treatment were less intelligent and less impaired on the Luria-Nebraska Neuropsychological Test Battery but were more impaired on the Halstead-Reitan Neuropsychological Test Battery. Dropouts differed only in reporting more frequent sexual fantasies of children. Of a possible 27 side effects for MPA, only two were statistically significant. MPA led to more depression and excess salivation than did the placebo, although the frequency of fatigue was noteworthy. MPA appeared as a useful sex drive reducing medication with few side effects but compliance in taking the drug was seen as a major obstacle in its use with pedophiles.
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