Wizard of Vitamins

Glucomannan Vitamin

What is Glucomannan?

Glucomannan is a water-soluble dietary fiber that is derived from konjac root (Amorphophallus konjac). Like other forms of dietary fiber, glucomannan is considered a “bulk-forming laxative.” Glucomannan promotes a larger, bulkier stool that passes through the colon more easily and requires less pressure and subsequently less straining to expel.

Glucomannan in Diets

Glucomannan is a purified fiber from konjac root that is available as a bulk powder to be taken in hard-gelatin capsules or used as an ingredient in food.

Glucomannan Medicinal Treatments

Constipation High blood cholesterol Insulin resistance syndrome (Syndrome X) Type 2 diabetes Obesity Diverticular disease Hypoglycemia Type 1 diabetes

Known Consequences of Glucomannan Deficiency

As glucomannan is not an essential nutrient, no deficiency state exists.

Glucomannan Recommended Dosages

The amount of glucomannan shown to be effective as a laxative is 3–4 grams per day. Effective amounts for lowering blood cholesterol have been 4–13 grams per day. For controlling blood sugar, 500–700 mg of glucomannan per 100 calories in the diet has been used successfully in controlled research. For weight loss, 1 to 3 grams before each meal has been effective. When using glucomannan and other dietary fiber supplements, it is best to start out with a small amount and increase gradually. It is recommended to drink at least 8 ounces of water each time any bulk-forming laxative, including glucomannan, is taken.

Glucomannan Side Effects

People with any disorder of the esophagus (the tube leading from the mouth to the stomach) should not take any fiber supplement in a pill form, as the supplement may expand in the esophagus and lead to obstruction. Preliminary reports in humans, as well and animal research, suggest that some people may be sensitive to inhaled glucomannan powder. Since intestinal bacteria ferment water-soluble fibers, a great deal of intestinal gas may be produced in individuals not accustomed to a high fiber diet, leading to flatulence and abdominal discomfort. At the time of writing, there were no well-known drug interactions with glucomannan.