OxyContin is generally referred to as oxycodone hydrochloride extended-release tablets, but there is no authoritative clinical data indicating whether it can be taken for a long period of time in the advanced stages of cancer, and patients need to strictly follow the doctor’s instructions for the use of medication. Oxycodone hydrochloride extended-release tablets are mainly used to relieve persistent moderate to severe pain. The dosage of the patient mainly depends on the patient’s pain level and the history of analgesic medication, generally need to take the drug every 12 hours. However, the drug is contraindicated in patients with hypoxic respiratory depression, craniocerebral injury, acute abdomen, delayed gastric emptying, paralytic intestinal obstruction, and chronic obstructive airway disease. Also, the drug is prohibited for patients with pulmonary heart disease, moderate to severe hepatic dysfunction, chronic constipation, severe renal dysfunction, acute or severe bronchial asthma, hypercapnia, allergy to oxycodone, as well as pregnant and lactating women. And the drug should not be used 24 hours before and after surgery, patients need to strictly follow the doctor’s instructions. It is recommended that patients with advanced cancer take Oxycodone Hydrochloride Extended-Release Tablets under the guidance of a doctor and avoid unauthorized use of the drug.