B1.3 GCSE
- Created by: maddiebayliss
- Created on: 16-05-16 16:58
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- B1.3
- Developing Medicines
- The first tests are in scientific laboratories on cells, tissues or organs.
- If the drug seems to work it is then tested on animals, healthy human volunteers and finally on patients.
- In some trials, with patients, placebos are used.
- This is to check that the drug being tested really does have an effect on the patient.
- In a double-blind trial, neither the doctor nor patient knows who is given the drug.
- Thalidomide was developed as a sleeping pill
- Doctors realised it controlled morning sickness in pregnant women.
- Some babies were born with limb abnormalities as a result of their mothers taking the drug.
- Thalidomide is now used to treat leprosy, but never given to pregnant women.
- Doctors realised it controlled morning sickness in pregnant women.
- Legal and Illegal Drugs
- Recreational drugs are used only for pleasure.
- They affect the brain and nervous system. They also have adverse affects on the heart and circulatory system.
- Include cannabis and heroin, which are illegal.
- Nicotine and caffeine are legal drugs which are used recreational.
- Addiction to nicotine leading to lung cancer from smoke.
- Alcohol poisoning
- Some drugs used for medical purposes can be used illegally, e.g stimulants used by sports people.
- If you try to stop taking addictive drugs you will suffer withdrawal symptoms
- Headaches
- Difficulty breathing
- Racing heart
- Anxiety
- Poor concentration
- Recreational drugs are used only for pleasure.
- Drugs in Sport
- Steroids are drugs which are used to build up muscle mass. Other drugs may be used to increase stamina.
- Strong pain killers are banned because the athlete might ignore injury and suffer further damage.
- Expensive. Unfair advantage to those who can afford them.
- Developing Medicines
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