A patient is prescribed a bulk-forming laxative for occasional constipation. Which statement by the patient indicates understanding of the teaching?

• A. I should take each dose with a full glass of water.
• B. Bulk-forming laxatives are safe for patients with diverticulitis.
• C. They are used to treat diarrhea because they form a firm fecal mass.
• D. They are safe for long-term use without review.

Answer: (A)

Bulk-forming laxatives work by absorbing water into the stool, which creates a soft, bulky mass that stretches the bowel and triggers peristalsis to promote a bowel movement. Because they rely on water to form the stool, taking each dose with a full glass of water is essential for both effectiveness and safety. Without enough fluids, the fiber can swell in the esophagus or intestines and increase the risk of obstruction, rather than forming a tractable stool. So the patient’s statement shows they understand how to use this medication correctly and safely.

These laxatives are intended for occasional constipation and can be used long-term if hydration is maintained and the patient is monitored. They are not used to treat diarrhea, and ongoing use generally requires periodic review rather than assuming it’s safe indefinitely. The other statements either misstate how bulk-forming laxatives work or overlook safety considerations.