what pathogens will analgesic not work on ? (science) Watch
Some medicines help to relieve the symptoms of a disease while others kill the infectious pathogens.
Painkillers like paracetamol and aspirin are available 'over-the-counter' at pharmacies.
Painkillers helps to relieve the symptoms of an infectious disease, but they do not kill the pathogens involved. For example, paracetamol, aspirin and morphine block nerve impulses from the painful part of the body, or block nerve impulses travelling to the part of the brain responsible for perceiving pain.
A bacterium damaged and distorted by penicillin
Antibiotics are substances that kill bacteria or stop their growth. They do not work against viruses because they live and reproduce inside cells. It is difficult to develop drugs that kill viruses without also damaging the body’s tissues.
Penicillin, the first antibiotic, was discovered in 1928 by Alexander Fleming. He noticed that some bacteria he had left in a Petri dish had been killed by naturally occurring penicillium mould. Since the discovery of penicillin, many other antibiotics have been discovered and developed.
Different antibiotics work in different ways. It is important that specific bacteria should be treated using specific antibiotics. This table gives some examples (you do not need to remember this information).
How some common antibiotics work