DetailsQuest Enzyme Digest Special! (135 Tabs for the price of 90 while stocks last). Quest Enzyme Digest is suitable for use by those with digestive difficulties, following a heavy meal, or the elderly. Supplementation with Quest Enzyme Digest will help to ensure an optimum level of digestive enzymes, aiding in the treatment or irritable bowel syndrome and indigestion. As a food supplement take one or two Tabs with each meal. Swallow with water. Suitable for vegans.