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Flawed trial distorted evidence on Prozac for depressed children

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Clinical trialMeta-analysisAntidepressant

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A single flawed medical trial conducted in Iran has significantly influenced meta-analyses recommending the use of Prozac (fluoxetine) for treating childhood depression. Researchers have identified that this small study disproportionately swayed the overall conclusions of systematic reviews that inform clinical practice guidelines for prescribing antidepressants to children. The findings raise concerns about how individual studies with methodological issues can impact evidence-based medical recommendations.


This discovery has important implications for pediatric mental health treatment, as current prescribing guidelines for childhood depression may be based on compromised evidence. It highlights the need for more rigorous quality assessment in meta-analyses and could lead to reassessment of antidepressant prescription practices for children.


Nature, Published online: 02 October 2026; doi:10.1038/d41586-026-02769-x

One small study in Iran swayed meta-analyses in favour of antidepressant use in children, researchers say.

Source: Prozac use for childhood depression skewed by single flawed medical trial