In April 2019 Ethical Consumer viewed Pfizer's website, www.pfizer.com, and found that the company tested its products on animals.
It stated "Pfizer is ethically and legally obliged to rigorously evaluate potential new medicines and therapies. Many of these evaluations can be, and are, accomplished by techniques that do not require the use of animals. However, given the present state of scientific knowledge, testing potential new medicines and therapies in animals is frequently critical to their evaluation, and is required by regulatory authorities worldwide to ensure the quality, efficacy and safety of the medicines we discover."
website (23 April 2019)