Morphine Sulfate Extended-Release Tablets, 100 mg by Mallinckrodt.
Generic for: MS ContinÃ‚Â®
Description: Gray, Round Convex Shaped Tablet
Identification Code: Debossed M in a box on one side and debossed "100" on the other side
Note that these pills are described as gray, and the 100 is in a box.