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==Key Stage 4==
[[File:MedicineSymbol.png|right|300px|thumb|A symbol used to represent '''medicine'''.]]
===Meaning===
[[Medicine]] is any treatment, including [[Medicinal Drug|drug]]s which can improve the [[health]] of an [[organism]] or prevent an [[organism]] from becoming unhealthy.
===About Medicine===
*[[Vaccination|Vaccines]] - Prevent [[infection]] by some [[pathogen]]s.
*[[Pain Killer]]s - Can reduce or eliminate pain.
*[[Antibiotic]]s - Weaken [[Pathogenic Bacteria|pathogenic bacteria]] when you have an [[infection]].*[[Antihistamine]]s - They reduce the [[symptom]]s symptoms of [[Hay Fever|hay feverhayfever]].
===Medicine Development===
New [[medicine]] goes through several stages of testing before it is made legal to use on [[patient]]spatients.
*Discovery - Thousands of [[chemical]]s are identified which could be used to treat a [[disease]]. Only some are found to be suitable.
*[[Preclinical Trial]]s - A potential [[medicine]] is tested on [[tissue]]s grown in a lab or on [[animal]]s to determine a [[Medicine|medicinal]] effect, before using it on [[human]]s.
*[[Clinical Trial]]s - A potential [[medicine]] is tested on [[human]]s to see if it is safe and if it works.
**Stage 1 - The potential [[medicine]] is tested in small [[dose]]s on healthy volunteers. This is done as a [[Double Blind Trial|double blind trial]] using a [[placebo]].
**Stage 2 - The potential [[medicine]] is tested on small numbers of [[patient]]s patients with the [[disease]]. This is done as a [[Double Blind Trial|double blind trial]] using a [[placebo]].**Stage 3 - The potential [[medicine]] is tested on large numbers of [[patient]]s patients in different doses to find the [[optimum]] [[dose]].*Licencing - The new [[medicine]] is reviewed for safety and if it passes the review can be prescribed by doctors. ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Medicine, pages 102-103, 197-199, GCSE Physics; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Medicine; use of radioactive materials, pages 104-5, 115, GCSE Physics, Hodder, AQA '']:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Medicine; use of ultrasound, page 191, GCSE Physics, Hodder, AQA '']:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Medicine; uses of electromagnetic waves, page 201, GCSE Physics, Hodder, AQA '']:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Medicines, pages 98-99, 102-109, 249, GCSE Biology; Third Edition, Oxford University Press, AQA ''] ====OCR====:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Medicine, pages 165, 228-229, 232-233, 240-245, Gateway GCSE Biology, Oxford, OCR '']:[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Medicines, page 96, Gateway GCSE Biology; The Revision Guide, CGP, OCR '']:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Medicines, pages 72, 75, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Medicines; developing new medicines, page 75, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']:[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Medicines; developing new, page 99, Gateway GCSE Biology; The Revision Guide, CGP, OCR '']