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Switching antiepileptic drugs to once-daily dosing regimens in epilepsy patients
Sung Hyun Kim1, Hyemi Lee1, Dong Wook Kim1
1Department of Neurology, Konkuk University School of Medicine, Seoul, Korea.
Background:
Antiepileptic drug (AED) non-adherence is an important factor contributing to poor seizure control in patients with epilepsy.
Aim:
The aim of this study is to investigate seizure improvement after switching AEDs to once-daily dosing regimens in patients with drug-resistant epilepsy related to AED non-adherence.
Methods:
We performed a 10-year retrospective analysis of drug-resistant epilepsy patients whom AED non-adherence attributed to drug resistance and switched AEDs to once-daily dosing regimens. Successful switching was defined by at least 70% reduction in seizure frequency without troublesome adverse events.
Results:
Among 401 patients with drug-resistant epilepsy, 88 patients with AED non-adherence were switched to once-daily dosing regimens. Forty-six patients (52.3%) experienced successful seizure control following the switch. A higher chance of successful switch was found in patients without MRI abnormality (16/46 vs. 24/42; P = .04) and in patients who were switched to extended-release formulations or different AEDs with longer half-lives (33/46 vs. 19/42; P = .02).
Conclusions:
Our study shows that switching AEDs to once-daily dosing regimens was an effective therapeutic option in patients with poor seizure control related to AED non-adherence. Treatment with extended-release formulations or drugs with longer half-lives should be considered in these patients.
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