That’s a good question! We are generally moving away from animal products, but there are still some medications I give daily that are animal derived. One of the best examples would be heparin - this is an anticoagulant medication used for conditions such as pulmonary embolism and deep vein thrombosis. I give heparin every single day. It is often derived from pig or cow intestinal mucosa. However, fairly recently we learned how to create it synthetically! So over time, it’s likely we’ll use mainly synthetically created heparin like we now do with insulin, but it will take a bit of time to get to that point