All drugs may have side effects. New drugs may cause side effects that do not show up until lots of people use them. Large scale testing is required before new drugs are released on the market. Part of this testing involves using animals
The reasons animal-rights groups oppose testing drugs on animals:
Laboratory animals are so different from humans that they do no react to drugs in the same way as a humans do
Humansdo not have the right to subject animals to any forms of experimentation
Scientists use these reasons to justify their work on animals:
Humans should never have their livesthreatened by experimentalprocedures
Testing on individualcells from tissuesdoes not reflect the complexity of livingorganisms
Computer simulation are not accurate enough to model all the biologicalprocesses that take place in livingorganisms
