There are thousands of medical research companies
in the world and hundreds of new products which enter the testing labs each month. Because so many products are being dashed out, there is a massive requirement for drug trials.
Simply put, drug trials
are the testing process of modern medicine which enable companies to determine whether or not their new product is safe for use for a majority (or all) of the people. By conducting drug trials, they can also determine their efficiency, purpose and more.
A vast majority of the drugs which you get prescribed from your doctor have been tested and confirmed to be safe for human use. Otherwise, these medicines will be a public safety hazard and it can be something extremely unsafe and hazardous for a lot of people.
Most medical research companies compete placebo effects with their new medicines just to see what kind of effect these medicines are having on a large amount of patients and whether or not this new medicine is more effective than placebo treatment.
At the end of the day, other than just developing new life saving drugs, research companies test everything they want to push out to the public, so that the general life of people is improved.