My fiancé has had a lot of drug problems in the passed and I thought we were all passed them however I found 2 different types of pills he doesn't have perscription to and one was white oval shaped with 10/325 and M523 on the front-found that one was acetaminophen and oxycodone/percocet but I cannot figure out what this other one is please please help anybody-it is small circular with a m in a square on the front and 596 on the back it is like a dark greenish blue color... please let me know if you know what this is please?! :(:confused: