Lynne,
Thanks for your question. No, there are not any animal byproducts. We give a full disclosure of all ingredients if you click on the Supplement Facts tab on the product page. If there were any ingredients sourced from animal it would be listed as part of the GMP label requirements and say something like (from a bovine source) either in the Supplement Facts box after the ingredient or in the section "Other Ingredients".
I hope this answers your question and let us know if we can provide any other answers. Be TyH well!