Can someone identify this pill:

White, Oval, M523 one side, 10/325 on other. Manufacturer claimed to have to have changed the 10/325 yellow oval percocet to this pill. These are precribed, but I am making sure it is the same thing I have been taking before I take this. When I picked it up for pharmacy, thought it was same thing which is why I did not look in bag. Can someone please help me ASAP?