Psyllium fiber used as laxative, diet aid

The name psyllium refers to the husk, seed and plant known in scientific circles as Plantago ovata. The seed grain of the annual plant is rich in soluble fiber. It’s an ingredient in some cereals and several over-the-counter laxatives, including Fiberall and Metamucil.

*

Uses: Psyllium is used to treat constipation, high cholesterol, irritable bowel syndrome and diarrhea. It’s sometimes used in attempts to lose weight and manage diabetes.

Dose: Psyllium doses range from two teaspoons to three tablespoons a day, or about 3 to 4 grams. The supplement is sold in powder, capsule, granule and wafer form.

Precautions: It is recommended that psyllium be taken with at least 5 to 8 ounces of water; inadequate water intake can cause the fiber to expand and block the esophagus or intestines. Side effects are rare but can include stomach pain, vomiting, rash and difficulty swallowing. Avoid taking other medications at the same time as psyllium because the supplement can delay the absorption of other substances into the bloodstream.

Research: Several clinical trials have shown that psyllium is an effective, though slow-acting, laxative; it also may be helpful in lowering LDL, or “bad” cholesterol. Research on its effectiveness at controlling blood sugar in diabetics is less conclusive. Evidence that the supplement contributes to weight loss is mixed, though many users report that psyllium contributes to a sense of feeling full.

Dietary supplement makers are not required by the U.S. government to demonstrate that their products are safe or effective. Ask your healthcare provider for advice on selecting a brand.

*

-- Elena Conis