R P 20 is known by the name of Oxycodone Hydrochloride, 20 mg made through Rhodes Pharmaceuticals L.P. The medication is prescribed for the treatment of moderate to extreme pain. It is categorized as an controlled substance in Schedule II within the Controlled Substances Act due to the possibility of abuse as well as the potential of addiction.This medicine is used for relief from moderate to extreme pain like those resulting from surgery, injury or other chronic ailments. The medication is prescribed only, and must be taken under the supervision of a health doctor.