Can you take sleeping pills with blood thinners?

If you take naproxen sodium more than once a week, you must immediately have your doctor or a hospital lab check your INR (prothrombin time) to know if your blood thinning is excessive. Normal is around 10 but if you have been prescribed Warfarin (Coumadin) for your heart condition, your level should probably be between 20 and 30. Higher levels can result in an internal hemorrhage.