Analgesics can be divided into non-opioid analgesics which include aspirin, paracetemol and acetaminophen, and other non-steroidal antiinflammatory drugs , which are discussed in their own section.

If modern medicine has come up with anything particularly worthwhile, it is the ability to numb most pain. All the drugs have side effects but principally these are clearly labelled and short-lived. The second group of analgesics are known as opioids and these are discussed in their own section.