Dear Cheesecake: MULTIPLE literature search at the National Library of Medicine site on effects of valproic acid (Depakote) on fertility yielded only a few citations. Here is one of the most current:
Epilepsia. 2011 Feb;52(2):199-211. doi: 10.1111/j.1528-1167.2010.02897.x. Epub 2011 Jan 4.
Antiepileptic drugs, sex hormones, and PCOS.
Verrotti A, D'Egidio C, Mohn A, Coppola G, Parisi P, Chiarelli F.
Department of Pediatrics, University of Chieti, Chieti, Italy. averrott@unich.it
Reproductive endocrine dysfunction in women with epilepsy is an important issue, and in recent years there is growing evidence to support the effect on sex hormones of both epilepsy per se and various antiepileptic drugs (AEDs). ..... The use of the liver enzyme-inducing AEDs--such as phenobarbital, phenytoin, and carbamazepine--can increase serum sex hormone-binding globulin concentrations, leading to diminished bioactivity of testosterone (T) and estradiol.
Valproic acid, an enzyme inhibitor, has been associated with the occurrence of reproductive endocrine disorders characterized by high serum T, free androgen index, androstenedione, dehydroepiandrosterone sulfate concentrations, and with polycystic changes in ovaries and menstrual disorders. A better understanding of the effects of AEDs on sex hormones is key to selecting the appropriate AEDs and is crucial for reproductive health in female patients.
Cheesecake, it is also correct that Depakote can decrease folic acid levels. This is less an issue in ovulations than it is preventing neural tube defects at the time of conception.
Bottom line, you MAY have developed chronic non-ovulation (consistent with polycystic ovarian syndrome as described above). This could make conceiving more difficult. I would urge you to see either your GYN or psychiatric MD about your menstrual changes and ask about alternative mood stabilizers, and other possible confounding issues with fertility (eg male factors since had had two live births).
Best wishes on conceiving soon.
Yours,
Jane