FDA Guidance on Lamotrigine and Zonisamide Assays

FDA has posted a final guidance on “Recommendations for Premarket Notifications for Lamotrigine and Zonisamide Assays” that discusses information to include in premarket notifications for assays for the anti-seizure drugs. The assays are intended to quantitatively measure concentrations of the respective drugs in serum or plasma as an aid in managing patients treated with the drugs, according to the agency. The recommendations are based on current review practices as well as information submitted to FDA by the Therapeutic Drug Monitoring Roundtable.

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