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Biology B1.3 The use and abuse of drugs

Scientists are continually developing new drugs:

New drugs are constantly being developed and must be tested in a series of stages to find out if they are safe
and effective.
New drugs are extensively tested for toxicity (serious side-effects), efficacy (capacity for…

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The effects of misuse of the legal recreational drugs, alcohol and nicotine:

The misuse of the illegal recreational drugs ecstasy, cannabis and heroin may have adverse effects on the
heart and circulatory system.
Drugs may be described as 'hard' or 'soft'. Hard drugs, like heroin, are generally more addictive and…


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