Gas-X Side Effects
Generic name: simethicone
Medically reviewed by Drugs.com. Last updated on Apr 28, 2022.
Note: This document contains side effect information about simethicone. Some of the dosage forms listed on this page may not apply to the brand name Gas-X.
For the Consumer
Applies to simethicone: oral capsule liquid filled, oral solution, oral suspension, oral tablet, oral tablet chewable
There have not been any common or important side effects reported with this medicine. However, if you notice any side effects, check with your doctor.
For Healthcare Professionals
Applies to simethicone: compounding liquid, compounding powder, oral capsule, oral disintegrating strip, oral liquid, oral suspension, oral tablet, oral tablet chewable
Gastrointestinal
Uncommon (0.1% to 1%): Constipation, nausea
Rare (0.01% to 0.1%): Tongue edema[Ref]
Hypersensitivity
Rare (0.01% to 0.1%): Face edema, hypersensitivity reactions[Ref]
Respiratory
Rare (0.01% to 0.1%): Respiratory difficulty[Ref]
Dermatologic
Rare (0.01% to 0.1%): Pruritus, rash[Ref]
Frequently asked questions
More about Gas-X (simethicone)
- Drug interactions
- Dosage information
- During pregnancy or Breastfeeding
- Reviews (18)
- Drug images
- Compare alternatives
- En español
- Drug class: miscellaneous GI agents
Patient resources
Other brands
Mylicon, Maalox Anti-Gas, Phazyme, Ovol, ... +14 more
Professional resources
Other formulations
Related treatment guides
References
1. "Product Information. Mylicon (simethicone)." Johnson and Johnson Medical Inc (2001):
2. "Product Information. Maalox Anti-Gas Extra Strength (simethicone)." Novartis Consumer Health (2003):
3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
4. Cerner Multum, Inc. "Australian Product Information." O 0
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.
