Oxycodone is used to treat moderate to severe pain. The extended-release form of this medicine is for around-the-clock treatment of pain.slide 2 of 21, Oxycodone 10 mg ER-WAT, round, white, imprinted with ABG, 10.slide 20 of 21, Oxycontin 80 mg, round, green, imprinted with OC, 80....