Biology B1.3

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What are drugs and what do they do?
Drugs are substances that change chemical reactions in the body. Medical drugs relieve disease and illness, and are extensively tested before being used. Recreational drugs are taken by people because they like the effects they have.
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What are the three main stages of drug testing?
The drugs are tested using computer models and human cells. Drugs that pass the first stage are tested on animals. In the UK, new medicines have to undergo these tests.Drugs are then used in clinical trials on human volunteers.
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What are double blind trials?
Double blind trials aim to minimise the placebo effect. Some patients are given the drug while others are given a placebo. A placebo does not actually contain any of the drug. The doctors and patients are not told who have received the drug.
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What are illegal drugs?
Illegal drugs include prescription drugs that have been dangerously modified and substances that are banned by law. Ecstasy, cannabis and heroin are illegal recreational drugs. Using them can cause health problems.
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What health problems do illeagle drugs cause?
Heroin and cocaine are very addictive. Like ecstasy, they can damage the heart and circulatory system. Cannabis smoke contains chemicals that cause mental illness in some people.
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What are some different types of performance inhancing drugs?
Stimulants – these boost heart rate and other body functions. Anabolic steroids – these stimulate the growth of muscles.
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Card 2

Front

What are the three main stages of drug testing?

Back

The drugs are tested using computer models and human cells. Drugs that pass the first stage are tested on animals. In the UK, new medicines have to undergo these tests.Drugs are then used in clinical trials on human volunteers.

Card 3

Front

What are double blind trials?

Back

Preview of the front of card 3

Card 4

Front

What are illegal drugs?

Back

Preview of the front of card 4

Card 5

Front

What health problems do illeagle drugs cause?

Back

Preview of the front of card 5
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