Attitudes towards the switching of anti-epileptic medications in pharmacies: the patients' perspective.

Purpose: A survey of epilepsy patients' experiences of and attitudes towards the pharmacy switching of anti-epileptic medications. Methods: A structured questionnaire was administered to a group of epilepsy patients treated at the Institute of Psychiatry and Neurology and the Medical University of Silesia, Poland. Two hundred and eleven patients (mean [± SD] age: 41.0 ± 15.6 years) were recruited; 60.6% were women. 68.2% had been treated for over 10 years. Results: Most individuals (63%) claimed that they had never bought a generic substitute medication. Among the patients who declared that a switch had been proposed to them at a pharmacy (~40%), only 68.7% received any explanation at all from a pharmacist. Some reported positive emotions mostly related to a lower price of the new drug but also to the explanations received. Most respondents who accepted the pharmacy switch (67.4%) did not notice any significant changes in the efficacy or tolerability of treatment, while the remaining subjects reported an increase in seizure frequency (23.2%) and deterioration in treatment tolerance (9%). Conclusions: Around 40% of Polish epilepsy patients have been confronted with a proposal to switch their anti-epileptic medications at a pharmacy. More of them report negative attitudes towards the pharmacist's proposal than do not. It is possible that one of the major reasons for this is the insufficient information provided by pharmacists. It remains to be established whether the reported decrease in seizure control could be accounted for by a low concentration of the anti-epileptic drug in the blood after the switch.