I found a pill in my sons room labeled (M30) and I think may be prescription painkillers. He’s 17 and I can’t find anything on it online. What is it?

Found a few M30 pills in my sons room and I think he may be taking them. I have looked up and can’t find what they are.<br><br>He’s 17 and don’t see any other evidence of drugs. But I do want to be on the lookout if it’s something bad.