Alexion Pharmaceuticals is on the Cruelty Free Investing animal use list due to its employment of animal testing in the development and testing of its products.
Alexion also makes a drug product from an enzyme found in an egg from a transgenic chicken. More information.
Alexion is a global biopharmaceutical company focused on developing and delivering life-transforming therapies for patients with devastating and rare diseases. http://www.alexion.com/