For patients with cancer pain, the biggest concern with narcotic medication is the addiction response. As a third-step treatment, if narcotic analgesics are needed, they are probably for moderate to severe pain. Through a large number of sample studies, cancer patients rarely have addiction reactions when using opioids. Including non-steroidal drugs, its main effect may be a certain irritation of the gastrointestinal tract, which may cause gastrointestinal discomfort. Patients are usually asked if they have a history of gastric ulcers, and if they have a history of gastric ulcers, it is not recommended to take such drugs because they may promote the occurrence of gastric ulcers, as well as the adverse effects of nausea and vomiting. You should follow the doctor’s instructions to use the medication and not go for abuse.