Cough drops can cause diarrhea, a mild and temporary side effect linked to specific ingredients in many over-the-counter remedies. This digestive issue stems from certain compounds, not the medicinal properties themselves.
Understanding the Connection Between Cough Drops and Diarrhea
The primary reason some cough drops can lead to diarrhea is their use of sugar alcohols as sweeteners. Ingredients like sorbitol, xylitol, mannitol, and isomalt are common sugar substitutes, used to reduce calories or provide a sugar-free option. These sugar alcohols have a laxative effect, especially when consumed in significant quantities.
When ingested, sugar alcohols are poorly absorbed by the small intestine. They travel largely intact to the large intestine, where they draw water into the bowel through an osmotic effect, increasing stool water content. This increased fluid, combined with fermentation by gut bacteria, can lead to loose stools and diarrhea.
While sugar alcohols are the most frequent culprits, other ingredients are less likely to cause digestive upset. The osmotic action of sugar alcohols remains the most common mechanism for cough drop-induced diarrhea.
Managing Diarrhea from Cough Drop Consumption
Diarrhea from cough drops is typically dose-dependent, occurring when many are consumed quickly. Checking the ingredient label for sugar alcohols like sorbitol or xylitol can help identify potential causes. Limiting daily cough drop intake is an effective way to prevent this side effect.
If diarrhea occurs, reducing or temporarily stopping cough drop intake often resolves the issue. Staying hydrated by drinking plenty of fluids, such as water, clear broths, or rehydration solutions, is important to replace lost fluids and electrolytes. Consuming bland foods like toast, rice, or bananas can also help soothe the digestive system and firm up stools.
When to Consult a Doctor
While cough drop-induced diarrhea is usually benign, medical advice may be necessary in some situations. Consult a healthcare professional if diarrhea is severe, characterized by frequent, watery stools, or persists for more than 24 to 48 hours after stopping cough drops. Signs of dehydration, such as excessive thirst, reduced urination, dry mouth, or dizziness, warrant immediate medical attention.
Other concerning symptoms necessitating a doctor’s visit include high fever, severe abdominal pain or cramping, or the presence of blood or black, tarry stools. People with pre-existing digestive conditions, such as irritable bowel syndrome or inflammatory bowel disease, should exercise caution with cough drops containing sugar alcohols. These individuals may be more susceptible to digestive upset and should discuss appropriate remedies with their healthcare provider.