Advanced Digestive EnzymesAdvanced Digestive Enzymes Details Thornes Advanced Digestive Enzymes is a comprehensive blend of digestive enzymes that support good digestion. A digestive enzyme supplement can be beneficial in circumstances when less than optimal amounts of digestive enzymes are being produced in the body. When to supplement with Thornes Advanced Digestive Enzymes: After consuming a meal heavy in fat or red meat For the occasional overindulgence When eating foods