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Background:   Carbamazepine and valproate are widely used in the treatment of epileptic seizures. However, these agents exhibit certain adverse effects including hematopoietic disorders (carbamazepine) and severe hepatotoxicity (valproate).Purpose:   To determine the extent of monitoring of the hematologic effects of carbamazepine as well as the extent of monitoring of the hepatic effects of valproate in patients with epilepsy receiving treatment with these agents.Method:   A cross-sectional antiepileptic drug use study using case notes of patients with epilepsy managed at the neurologic clinics of 2 tertiary medical facilities in Nigeria between January and December 2017.Results:   Carbamazepine was the most frequently prescribed antiepileptic drug (48.24%), followed by valproate (29.34%) and levetiracetam (9.24%). Pretreatment monitoring of hematologic effect was carried out in only 61.11% of patients placed on carbamazepine therapy while follow-up monitoring was done in 3.7% of these patients. Also, in patients placed on valproate therapy, pretreatment and follow-up monitoring of the hepatic effect was done in only 33.71% and 19.0% of the patients, respectively.Conclusions:   The extent of monitoring of the hematologic effects of carbamazepine, as well as the hepatic effects of valproate in the cohort studied, is poor.

Infrequent Monitoring of the Effects of Valproate and Carbamazepine Therapy in Patients With Epilepsy in Nigeria