Simethicone is a widely available over-the-counter medication designed to relieve symptoms of gas, such as bloating, pressure, and discomfort. Many people wonder about its exact effects on intestinal gas, particularly whether it might increase the frequency of flatulence. This article aims to clarify how simethicone works to manage gas within the body.
What Simethicone Is
Simethicone functions as an anti-foaming agent, meaning it works by changing the physical properties of gas bubbles in the digestive tract. Specifically, it decreases the surface tension of these gas bubbles. This action causes numerous small, foamy gas bubbles to combine into larger, more easily passable bubbles.
Simethicone is not absorbed into the bloodstream, making it physiologically inert. Instead, it acts locally within the gastrointestinal tract and is excreted unchanged in the feces. Its mechanism is purely physical, helping to coalesce existing gas rather than preventing its formation.
How Gas Forms in the Body
Intestinal gas primarily originates from two main sources. One significant source is swallowed air, a common occurrence during eating, drinking, chewing gum, or even talking. Most of this swallowed air, which can include nitrogen and oxygen, exits the body through belching.
The second primary source of gas is the fermentation process carried out by bacteria in the large intestine. These bacteria break down undigested carbohydrates, such as certain fibers, starches, and sugars, that were not absorbed in the small intestine. This bacterial activity produces gases like hydrogen, carbon dioxide, and sometimes methane, which are then released through the rectum as flatulence.
Simethicone’s Effect on Intestinal Gas
Simethicone does not create new gas in the digestive system. Instead, its function is to help the body manage and expel existing gas more efficiently. It encourages small, trapped gas bubbles to merge into larger ones. These larger bubbles are then easier for the body to pass, either through belching (burping) or flatulence.
Therefore, while simethicone may lead to an increase in the frequency of passing gas, these expulsions are typically smaller and less painful than the discomfort caused by trapped, numerous small bubbles. It is important to note that simethicone assists in the expulsion of gas but does not prevent its formation or address underlying conditions that might cause excessive gas production.
Important Usage Information
Simethicone is well-tolerated and safe for most individuals, including infants. It is available in various forms such as drops, chewable tablets, and capsules. Dosage recommendations vary by age; for adults, a typical dose might range from 40 to 125 mg taken four times daily after meals and at bedtime, with a maximum daily dose of 500 mg.
For children aged 2 to 12 years, a common recommendation is 40 mg four times daily, not exceeding 480 mg per day. For children under two years, 20 mg per dose, up to 240 mg daily is recommended. Simethicone can be taken with or after meals and at bedtime, as needed for symptoms. Side effects are rare but may include mild nausea or diarrhea. If gas symptoms persist, worsen, or are accompanied by severe abdominal pain, it is advisable to consult a healthcare professional.