NANP Board Practice Exam

What is a natural stimulant laxative often found in formulas to relieve chronic constipation?

1. Fiber

2. Magnesium

3. Senna

4. Vitamin C

The correct answer is: Senna

Senna is indeed a natural stimulant laxative commonly utilized in formulas aimed at relieving chronic constipation. It works by stimulating the muscles in the intestines, promoting bowel movements and enhancing the passage of stools. Senna contains compounds called sennosides, which trigger the lining of the bowel to contract, effectively helping to alleviate constipation. On the other hand, while fiber is essential for maintaining digestive health and preventing constipation, it primarily functions by adding bulk to the stool rather than stimulating bowel movements directly. Magnesium can be used to relax the bowels and has osmotic properties which can help alleviate constipation, but it's not classified strictly as a stimulant laxative. Similarly, Vitamin C, in high doses, can also aid in reducing constipation due to its potential to increase osmotic pressure in the intestines, but it does not have the specific stimulating effects associated with laxatives like senna does.