(AP) -- Bristol-Myers Squibb Co. says it is recalling one production lot of its blood thinner Coumadin after finding an oversize tablet.

The company says it tested a returned bottle of Coumadin and found that one tablet was more potent than expected. An excessive dose of Coumadin, or , could create an increased risk of bleeding. The recall affects 5-milligram Coumadin tablets with an expiration date of Sept. 30, 2012. The production lot is number 9H49374A.

The New York drugmaker says patients taking 5-milligram tablets should not stop taking them, but should talk to their pharmacist to find out if their prescription was filled with that have been recalled.