PEG-3350 with Electrolytes
Gavilyte-H is a prescription bowel preparation solution used to empty the colon before medical procedures such as colonoscopy or colon surgery. It contains polyethylene glycol (PEG) combined with electrolytes and simethicone, which helps reduce gas and bloating during the preparation process. This medication is typically prescribed by gastroenterologists or other healthcare providers for patients undergoing colon examinations.
Gavilyte-H is a prescription bowel prep medication containing PEG and simethicone used to cleanse the colon before colonoscopy or other medical procedures.
Key facts at a glance
- RxNorm
- 1718985
- Generic
- Gavilyte-H
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Gavilyte-H is indicated for bowel cleansing prior to colonoscopy, sigmoidoscopy, or colon surgery. It is used in adults who require complete colon evacuation for accurate diagnostic examination or surgical preparation.
Gavilyte-H works as an osmotic laxative. The polyethylene glycol draws water into the intestines, softening stool and increasing bowel motility, while electrolytes maintain proper hydration and sodium-potassium balance. The added simethicone acts as an anti-foaming agent to reduce gas bubbles, making the preparation process more comfortable.
Gavilyte-H must be mixed with water before use and the entire solution should be consumed as directed, typically divided between the evening before and the morning of the procedure. Patients should follow clear liquid diet instructions and stay hydrated. Those with bowel obstruction, perforation, or severe electrolyte imbalances should not use this medication. Common side effects include nausea, abdominal cramping, and bloating. A healthcare provider should be consulted regarding all current medications, as Gavilyte-H may affect drug absorption.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy