Supplementary digestive enzymes may be necessary due to lifestyle habits, illness, or age that impedes adequate enzyme secretion in the gastrointestinal tract.  Digestive enzyme supplements may be single-function enzymes such as lactase that provide relief for lactose-intolerant individuals so that they can enjoy dairy products without digestive problems.  Some are multiple enzyme supplements consisting of lipases, proteases, and carbohydrases for the break down of fat, protein, and carbohydrates, respectively.  Click here to learn more about digestive enzymes and digestive health.