Preclinical testing is the first stage in developing new medicines, where the drug is tested in the laboratory and on animals before being tested on humans. This testing helps scientists check if the drug is safe, effective, and works as expected. Researchers study how the drug affects cells, tissues, and live animals, looking at things like side effects, dosage, and how the drug moves through the body. Only if it passes preclinical testing can the drug move on to clinical trials involving people.
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