Oral painkillers should be taken in strict accordance with the instructions, not in excessive doses, and can be taken twice a day, that is, one pill in the morning and one pill in the evening. For example, if you start with non-steroidal anti-inflammatory drugs, you can start with opioid analgesics, including fenbid, aspirin, celecoxib, ereciclib, etc.; opioid analgesics include mescaline, oxycontin, etc., because opioid analgesics have a very strong analgesic effect. The effect of opioid analgesics is very strong and addictive, if taken for a long time or in excessive doses, it may lead to a reduction in the analgesic effect, and at the same time will lead to addiction.