Medication guide
Simethicone
- Generic name
- Simethicone
- Common brand names
- Gas-X, Phazyme
- Medication class
- Antiflatulent
Overview
Its medication class is Antiflatulent. Common uses include Gas and bloating. Product forms and labels can differ, so follow the specific package instructions and ask a pharmacist or qualified healthcare professional about individual questions.
How to Take it
Editorial correction, September 24, 2026: the imported route label was corrected using the references below. This does not constitute a full medical review of the guide.
- Route
- Oral tablets, chewable tablets, capsules, or liquid, depending on the product. Simethicone is used for gas symptoms.
- Time of day
- Use at start of loose stool episode and as per label if stools continue.
- With food/water
- Use with water and small frequent fluids.
- Preparation
- Swallow tablets at first diarrhea episode and after each additional stool as labeled.
- Safe dose
- Keep to initial dose plus labeled maintenance doses only.
- Max dose
- Do not exceed OTC daily cap.
- Frequency
- Interval-based dosing; never stack multiple antidiarrheals.
- Other recommendations
- Seek urgent care for blood, fever, severe dehydration, or infant/elderly dehydration signs.
Common uses
- Gas and bloating
Common side effects
- Nausea
- bloating
- mild abdominal pain
- headache
- and diarrhea
Important warnings
- Generally low risk, but persistent pain, fever, vomiting, bloating, or inability to pass stool/absent bowel sounds needs urgent assessment. Not for undiagnosed abdominal emergencies; use OTC care only for temporary gas relief.
General interactions information
Minimal systemic interactions; usually compatible with other GI meds
Sources / references
- Simethicone — MedlinePlus
U.S. National Library of Medicine
These references offer further reading. A source link does not establish that a clinician has reviewed every statement in this guide.
Editorial record
Recorded content review date:
A named medical reviewer and their credentials have not yet been documented for this guide.
Editorial standards and corrections