Which symptom might shift from constipation to diarrhea in a client taking metformin?

The correct choice highlights a significant aspect of how metformin interacts with the gastrointestinal system. In some patients taking metformin, the medication can lead to various gastrointestinal symptoms due to its effects on gut motility and the microbiome.

Specifically, it is known for causing gastrointestinal disturbances that may initially present as constipation. Over time, as metformin continues to be taken, some individuals may experience a change in their bowel habits, leading to diarrhea instead. This shift occurs because metformin can alter the normal gut flora and increase intestinal motility, resulting in changes in how stool is formed and expelled.

Recognizing this symptom pattern is crucial for monitoring and managing side effects in patients on metformin therapy. Understanding that metformin can influence bowel habits from constipation to diarrhea helps providers anticipate potential issues and offer supportive care or adjustments to the treatment plan as necessary.