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  • Title: Serum phenytoin, phenobarbital, carbamazepine, albumin; and plasma estradiol, progesterone concentrations during the menstrual cycle in women with epilepsy.
    Author: Bäckström T, Jorpes P.
    Journal: Acta Neurol Scand; 1979 Mar; 59(2-3):63-71. PubMed ID: 452841.
    Abstract:
    Six menstrual cycles and three 1-month periods were studied in seven patients with epilepsy. The patients all had had anti-epileptic treatment for a long time. In each case, the dosages had been costant for at least 1 month prior to the start of the investigation. Blood samples were taken every second day. Phenytoin, phenobarbital, carbamazepine, estradiol and pregesterone were analyzed. The serum levels of the anti-epileptic drugs were correlated to the plasma hormone concentrations. No correlations were obtained between the plasma hormone concentrations and the serum levels of the anti-epileptic drugs. There is, therefore, no evidence that the relationship between the seizure frequency and plasma hormone concentrations, shown in a previous study (Bäckström 1976)) was related to a change in serum levels of the anti-epileptic drugs.
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