• Intestinal Gas
Many foods can cause gassiness, including beans (legumes), broccoli, cabbage, onions, and whole grains. This occurs because these foods contain complex carbohydrates that are not entirely broken down in the digestive tract, and instead serve as food for intestinal bacteria. These bacteria produce hydrogen and carbon dioxide gas as they digest the carbohydrates. While everyone develops intestinal gas to some extent, certain people have an intolerance of complex carbohydrates and develop relatively more severe symptoms.
Alpha-galactosidase is ordinarily manufactured by the body and is not a nutrient. It is found in particularly high quantities in the yeast Aspergillus niger , the source of commercial products.
A typical supplemental dosage of alpha-galactosidase provides 450 GalU ( galactosidase units) per meal.
Although alpha-galactosidase is widely marketed as an over-the-counter treatment to prevent
, there is only limited evidence that it really works. In two preliminary double-blind, controlled trials enrolling a total of 39 people, use of alpha-galactosidase along with a meal of beans significantly reduced symptoms of excess gas.
Although alpha-glucosidase appears to be safe for people in normal health, there are potential concerns involving people with diabetes
Alpha-glucosidase breaks down complex carbohydrates into easily absorbed sugars. This may raise blood sugar levels in people with diabetes. Drugs that block alpha-glucosidase (alpha-glucosidase inhibitors) have proven benefit for people with diabetes. One study found that use of alpha-glucosidase supplements reduced the effectiveness of the diabetes drug acarbose, an alpha-glucosidase inhibitor drug.
People with the genetic condition galactosemia should also avoid alphagalactosidase as it could, in theory, worsen symptoms of the disease.
Safety in young children, pregnant or nursing women, or people with severe liver or kidney disease has not been established.
2. Solomons NW, Vettorazzi L, Grazioso C. Use of an oral alpha-galactosidase to control gastrointestinal symptoms from legume oligosaccharides in bean-intolerant subjects: a doubly masked, controlled therapeutic trial. Clin Res . 1991;39:428A.
4. Solomons NW, Guerrero AM, Zepada E, Grazioso C. The efficacy of an oral alpha-galactosidase to promote oligosaccharide hydrolysis and to reduce intolerance symptoms after ingestion of beans: a dose response trial. ClinRes . 1991;39:655A.
Last reviewed April 2009 by EBSCO CAM Review Board
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