Characteristics of aspirin

Analgesic effect of antipyretic, analgesic and anti-inflammatory drugs such as aspirin: It has a good analgesic effect on moderate dull pain such as headache, toothache, neuralgia, joint pain, muscle pain and menstrual pain, but has no effect on severe pain in external trauma and visceral smooth muscle colic. Its analgesic effect does not act on opioid receptors, so this type of drug is not addictive, and its analgesic effect is peripheral, such as salicylic acid, which has an analgesic effect by inhibiting the synthesis of PG.

Analgesic effect of analgesics: acts primarily on the central nervous system. Most analgesics are opioid alkaloids such as morphine and codeine. Some of them are similar synthetic products such as pethidine, methadone, fentanyl, new analgesic, etc. At the same time, mental tension, irritability and other unpleasant emotions caused by pain can be relieved, which helps to bear the pain. This type of medicine has a strong analgesic effect and is mainly used for severe pain. Most analgesics can be addictive if used continuously, so they are also called addictive analgesics and should not be used for a long time. Most analgesics have a depressant effect on the respiratory center, and if poisoned, they can die from respiratory depression. Most of these drugs produce analgesic and respiratory suppressant effects by activating opioid receptors, and morphine is a full opioid receptor agonist; Analgesics are a partial agonist of opioid receptors; Naloxone is an opioid receptor antagonist that may antagonize the analgesic and respiratory suppression effects of morphine.