Although creatine is only found in animal products, most forms of supplemental creatine are produced from non-animal ingredients and do not contain any animal by-products making them vegan-friendly (16). But if you want to be sure that the creatine monohydrate you’re buying is vegan-friendly, look for products that contain Creapure Creapure is the brand name for pure creatine monohydrate that is manufactured in Germany using no materials of animal origin. Though keep in mind that pre-workouts may contain other ingredients that are not vegan-friendly.