Supplements made from psyllium husk benefit human health in a number of important ways. According to the University of Maryland Medical Center, this natural product expands in the colon to produce a gentle, bulk-forming laxative. Additionally, psyllium husk helps to reduce cholesterol, prevent diarrhea and ease symptoms of chronic conditions like irritable bowel syndrome. Nevertheless, many health care providers advise patients to take psyllium husk with caution. If used inappropriately, it can produce side effects ranging in severity from uncomfortable to life-threatening.
Allergic Reaction
Like most plant-based products, psyllium husk supplements may cause an allergic reaction in susceptible individuals. The U.S. National Institutes of Health (NIH) warn that psyllium allergies are common in people who are exposed to the product regularly. In mild cases, this reaction may manifest as a light rash. Symptoms of a sever psyllium allergy include wheezing, hives, vomiting and difficulty breathing.
Bowel Obstructions
Rarely, psyllium husk may cause a bowel obstruction. This serious side effect is most commonly seen in people who have had recent bowel surgery and people with colon defects. NIH advises these high-risk individuals to consult a health care provider before using psyllium.
Choking
Psyllium can not be taken dry. Unless the product is mixed with water before it is swallowed, it may expand in the mouth or throat. This can cause choking or severe discomfort. The Maryland University Medical Center advises people with difficulty swallowing to avoid psyllium supplements.
Drug Interactions
The University of Maryland Medical Center notes that psyllium may decrease the absorption of certain drugs; the organization recommends taking psyllium at least one hour before or two hours after other drugs and supplements. Additionaly, NIH warns that psyllium should be used cautiously with other laxatives, since it is likely to increase the effects of other laxative products.
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