Why can animal testing eliminate drug side effects?
Safety testing of new drugs involves non-animal tests, animal tests and human trials. The animal tests provide vital information which prevents the poisoning of human volunteers who take part in trials. Drugs are usually tested on many more people than animals. If side effects show up only after the drug has been marketed and prescribed to hundreds of thousands of people, it is because they are very rare. So rare that the human trials on several thousand people would not discover them.
