Members and retirees who were using the recalled painkiller Vioxx can get refunds on their co-payments. Merck & Co. announced Sept. 30 that it would pull the arthritis drug from the market after recent studies linked Vioxx to heart problems.

To obtain a refund, call Merck’s National Notification Center at 800-805-9542 or go to www.vioxx.com.

Merck will send patients a refund kit. Patients must return unused medication in its original container along with receipts. Refunds will be pro-rated to reflect how many pills were taken.