Pill with imprint 30 M is Blue, Round and has been identified as Oxycodone Hydrochloride 30 mg. Here you can buy Oxycodone Over the counter . Oxycodone is used in the treatment of chronic pain; pain and belongs to the drug class narcotic analgesics. FDA has not classified the drug for risk during pregnancy. Oxycodone 30 mg is classified as a Schedule 2 controlled substance under the Controlled Substance Act