Temporal Changes in Dispensing of Methylphenidate During Attention Deficit Hyperactivity Disorder Shortages in Australia: An Interrupted Time Series and Descriptive Analysis of National Dispensing Patterns

CONCLUSION: Methylphenidate dispensing in Australia became unstable during extensive supply shortages from late 2024. Although numerous S19A products were approved, there was minimal uptake of S19A PBS-listed products at the population level. As ADHD medicine utilisation continues to rise, strengthened national strategies to improve supply chain resilience, transparency and responsiveness are required.

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