Dysport® and Xeomin® are both made from the same botulinum toxin type A. The difference is that Xeomin® is a “naked” molecule meaning that it doesn’t have any added proteins (like cow’s milk protein). Some people are allergic to cow’s milk protein so they may prefer Xeomin®. Because it has no added proteins, Xeomin® is a better choice for people with autoimmune conditions or an overactive immune system.