Oxycodone is an opioid that attaches itself to the mu-receptors in the nervous system. This blocks pain signals from the body to the pain center in the brain. Buy Oxycodone online also acts on several tissues that are not related to its pain-relieving effect. It works on the respiratory center in the brain stem, the cough center in the medulla, the cardiovascular system, etc. Due to this, it is also sometimes administered to treat cough and is not suggested to be taken with other respiratory suppressants.