Types and Uses of Painkillers

The video tutorial explains the two main types of painkillers: narcotic opioids and aspirin drugs. Narcotic opioids like morphine and codeine alter the perception of pain by blocking pain signals to the brain. Aspirin drugs, including paracetamol and ibuprofen, target the source of pain by inhibiting the enzyme cyclooxygenase 2, which is responsible for producing pain-inducing prostaglandins. The video also covers the historical use of botanical remedies and the discovery of salicin, the active component in aspirin.

What historical remedies were used for pain relief before modern painkillers?

What is salicin and how is it related to aspirin?