Simethicone Safety and Efficacy

Contraindications and Precautions

The American Gastroenterological Association considers simethicone to have no absolute contraindications, with minimal systemic absorption, making it suitable for widespread use in gastrointestinal applications 1, 2, 3
Theoretical concerns exist regarding intraprocedural aspiration when simethicone is administered orally 15-30 minutes before endoscopy, though clinical trials have demonstrated safety and efficacy with this timing 1, 2, 3
Professional societies recommend caution with simethicone use during endoscopy due to potential biofilm development and infectious risk from retention of simethicone droplets in endoscope channels despite high-level disinfection 1, 2, 3

When used during endoscopy, the lowest effective concentration (0.5% v/v; 10 mg/100 mL) should be administered through the working channel rather than the waterjet channel to minimize equipment contamination risk 4