Quiz 33 Flashcards
Why are painkillers different to antibiotics?
Painkillers only treat symptoms of infection. Painkillers don’t kill bacteria like antibiotics do
In double-blind trials, who knows got the drug and who got the placebo?
Neither the patient nor the doctor
How many stages of the clinical trials are there?
Three
Many modern drugs are based on chemicals found in plants or microorganisms. True or false?
True
Why are healthy volunteers, not sick patients, used in the first stage of clinical trials?
Too risky for a sick person and it is easier to identify side effects of drug in healthy volunteers
Describe the best drugs in terms of efficacy and toxicity
The best drugs have high efficacy(very effective) and low toxicity(not dangerous)
Why can’t antibiotics kill viruses?
Viruses live inside cells and so they are inaccessible to antibiotics
In terms of drugs, what does toxicity mean?
How dangerous the drug could be
Why are new drugs trialled before they are used?
To show they are safe and to show they are effective
What happens in the third stage if the clinical trial?
Double blind trials to find out if the drug is effective
Why are results of clinical trials studies by other scientists before they are published?
To make sure conclusions are valid and to avoid bias
Why are low, not high, doses given to patients in the first stage of clinical trials?
To reduce the risk if the drug is unsafe and to look for side effects
What happens in the second stage of the clinical trial?
Drugs are tested to find the best dose
What is the drug digitalis used to treat?
Heart disease
What is an antibiotic?
A drug that kills bacteria
