It is not so much difficult to overcome the severe pain. Oxycodone is one of the most popular medicines, that is used to relieve moderate to severe pain when other pain medicines do not work well enough. To buy Oxycodone online you will need the doctor's prescription. In Bigpharmausa Oxycodone comes with 8 variants; Oxycodone 5mg, Oxycodone 10mg, Oxycodone 15mg, Oxycodone 20mg, Etc. Oxycodone acts on the central nervous system(CNS) to the pain. This medication may be prescribed for other uses; ask your doctor or pharmacist for more information. Physiological effects of oxycodone include Pain relief, sedation, respiratory depression, constipation, papillary constriction, and cough suppression.