Are generic ADHD medications less effective than brand-name versions?

No, generic ADHD medications are held to the same bioequivalence standards as brand-name versions and are expected to work the same way for most people. Health Canada requires generics to demonstrate that the active ingredient reaches the bloodstream within a defined equivalent range compared with the brand version before approval. Where people sometimes notice a real difference is with extended-release formulations specifically, where the release mechanism, not the active drug, can vary slightly between manufacturers and occasionally affect how smoothly a dose is felt throughout the day. If the change is persistent, distressing, or affecting daily functioning, contact your provider through the FasTreat portal rather than changing medication on your own. Related reading: https://www.fastreat.com/en/blogs/adhd-medication References: https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/applications-submissions/guidance-documents/bioequivalence-requirements.html