Medication treatments can be effective in paediatric anxiety disorders, acting to reduce core symptoms, and should be considered as part of the treatment of these disorders. The greatest number of trials showing efficacy to date have assessed the SSRIs in treating paediatric OCD.
There is no clear evidence to show that any particular class of medication is more effective or better tolerated than any other. As quantitative data was only available for the SSRIs and venlafaxine the routine use of benzodiazepines cannot be recommended, especially given concerns of dependency and treatment -related emergent adverse events associated with this class of drugs. 

Future RCTs could help identify potential clinical moderators of treatment efficacy. Studies of the long-term efficacy of medication treatment, optimal dosage, as well as direct comparisons of pharmacotherapy and psychotherapy are also warranted.
Fluoxetine in children and adolescents with OCD: a placebo-controlled trial.
To examine the safety and efficacy of fluoxetine in child and adolescent obsessive-compulsive disorder (OCD).
                Between 1991 and 1998, 43 patients were randomly assigned to fluoxetine or placebo for 8 weeks. Dosing was fixed for the first 6 weeks (up to 60 mg/day) and then could be increased to 80 mg/day. Responders entered an 8-week maintenance phase. The primary outcome measures were the Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS) and the Clinical Global Impression-Improvement (CGI-I) scale. Analyses were done on the intent-to-treat sample.
                Fluoxetine patients (n = 21) had significantly lower CY-BOCS scores than placebo patients (n = 22) after 16 (but not 8) weeks. Fluoxetine responders (n = 11) had significantly lower CY-BOCS scores than placebo responders (n = 7) after an additional 8 weeks of treatment. After 16 weeks, 57% of fluoxetine (versus 27% of placebo) patients were much or very much improved on the CGI-I scale (p <.05). No patient terminated the study because of adverse medication effects.
                Fluoxetine was well tolerated and effective for the treatment of child and adolescent OCD, but fluoxetine's full effect took more than 8 weeks to develop.