This is another digestive enzyme formula that helps build digestive enzymes of the small intestines. The FDA has not approved of these statements and you are taking ths vegan friendly food supplement at your own risk, usually at each meal for better digestion. 563*ZYME SIS#2-100 caps digestive enzymes of the small intestines) contains: celery seed, black walnut leaf, agrimony leaf, goldenseal root, parsley leaf, peppermint leaf.