Mylan has been awarded 180 days of marketing exclusivity for the 500mg strength, which it will begin to ship February 2, 2009. Mylan was the first company to file a substantially complete abbreviated new drug application containing a Paragraph IV certification for the 500mg strength.
Divalproex Sodium extended-release (Divalproex ER) tablets are the generic version of Abbott Laboratories’s Depakote ER.