--- title: A Step-by-Step Guide to Preparing for Flexible Sigmoidoscopy description: Gastroenterology Associates provides step-by-step instructions on how to prepare for a flexible sigmoidoscopy. image: https://www.ligastrohealth.com/hubfs/Licdh%20January2018%20Theme/Images/LICDH_OGImage1.jpg --- English | [Español](https://www.ligastrohealth.com/es/procedure-instructions/flexible-sigmoidoscopy-preparation/) [![Logo](https://www.ligastrohealth.com/hubfs/Licdh%20January2018%20Theme/Images/GA-Logo_BlueWhite2b.png)](https://www.ligastrohealth.com/) [![Logo](https://www.ligastrohealth.com/hubfs/Licdh%20January2018%20Theme/Images/GA-Logo_BlueBlack2b.png)](https://www.ligastrohealth.com/) ![Flexible Sigmoidoscopy Preparation](https://www.ligastrohealth.com/hs-fs/hubfs/Licdh%20January2018%20Theme/Images/LICDH_TitleHero.jpg?width=1920&height=445&name=LICDH_TitleHero.jpg) # Flexible Sigmoidoscopy Preparation ### Flexible Sigmoidoscopy Preparation #### Day before Sigmoidoscopy 1. You may eat a regular breakfast and lunch. Please finish eating lunch by 1:00 PM 2. After lunch you should remain on a clear liquid diet. You may have coffee, tea, juice (without pulp), Jell-O (without fruit, NOT orange, red or purple), and clear broth. 3. At 7:00 PM drink 1 bottle (10oz.) of Citrate of Magnesia (can be purchased over the counter at a pharmacy.) This may be chilled prior to consumption. **DO NOT drink any liquids 4 hours prior to your appointment.** #### Day of Sigmoidoscopy 1. One hour prior to your examination administer one fleet enema (green & white box) or a 32oz. tap water enema. 2. Arrive for sigmoidoscopy at scheduled time. [![Back to Procedure Instructions](https://no-cache.hubspot.com/cta/default/4196955/f95ca1f2-92e4-4e99-b948-fbf9066f9b78.png)](https://cta-redirect.hubspot.com/cta/redirect/4196955/f95ca1f2-92e4-4e99-b948-fbf9066f9b78) **GASTROENTEROLOGY ASSOCIATES** 106 Charles Lindbergh Blvd., Suite B, Mitchel Field, Uniondale, NY 11553 ** Phone: 516.248.3737 ** Fax: 866.540-1163 **LONG ISLAND CENTER FOR DIGESTIVE HEALTH** 106 Charles Lindbergh Blvd., Suite C, Mitchel Field, Uniondale, NY 11553 ** Phone: 516.794.1868 ** Fax: 516.794.1627 [ Gastroenterology Associates on Facebook ](https://www.facebook.com/pages/Gastroenterology-Associates/285209374890717)[ Gastroenterology Associates on Twitter ](http://twitter.com/GIAssociatesNY) ### ABOUT - [Our Doctors](https://www.ligastrohealth.com/our-doctors/) - [Our Philosophy](https://www.ligastrohealth.com/our-philosophy/) - [Testimonials](https://www.ligastrohealth.com/testimonials/) - [Blog](https://www.ligastrohealth.com/blog/) ### LICDH - [About LICDH](https://www.ligastrohealth.com/licdh/) - [Procedure Information & Consent Forms](https://www.ligastrohealth.com/licdh/procedure-information) - [Physicians & Staff](https://www.ligastrohealth.com/licdh/physicians) ### CONDITIONS - [Colon Cancer](https://www.ligastrohealth.com/colon-cancer/) - [Heartburn and Acid Reflux](https://www.ligastrohealth.com/gerd/) - [Inflammatory Bowel Disease (IBD)](https://www.ligastrohealth.com/ibd/) - [Irritable Bowel Syndrome (IBS)](https://www.ligastrohealth.com/what-is-ibs) - [Liver, Pancreas, & Gallbladder](https://www.ligastrohealth.com/liver-pancreas-and-gallbladder/) - [Celiac Disease & H.pylori](https://www.ligastrohealth.com/celiac-disease-and-h-pylori/) - [Gluten Sensitivity](https://www.ligastrohealth.com/gluten-sensitivity) ### PROCEDURES - [Capsule Endoscopy](https://www.ligastrohealth.com/capsule-endoscopy/) - [Colonoscopy](https://www.ligastrohealth.com/colonoscopy/) - [Upper Endoscopy](https://www.ligastrohealth.com/upper-endoscopy/) [Information for Patients](https://www.ligastrohealth.com/patient-resources/) [![Northwell Health Logo](https://www.ligastrohealth.com/hs-fs/hubfs/LICDH_NorthwellHealthLogo.png?width=120&height=65&name=LICDH_NorthwellHealthLogo.png)](https://www.northwell.edu/) [![ACG logo](https://www.ligastrohealth.com/hs-fs/hubfs/Licdh%20January2018%20Theme/Images/ACG-Logo2.jpg?width=121&height=121&name=ACG-Logo2.jpg)](http://gi.org/) [![AGA logo](https://www.ligastrohealth.com/hs-fs/hubfs/Licdh%20January2018%20Theme/Images/AGA-Logo.jpg?width=131&height=131&name=AGA-Logo.jpg)](https://www.gastro.org/) [![ASGA logo](https://www.ligastrohealth.com/hubfs/Licdh%20January2018%20Theme/Images/ASGA-Logo.jpg)](http://www.asge.org/)  [![APEX Awards logo](https://www.ligastrohealth.com/hs-fs/hubfs/Licdh%20January2018%20Theme/Images/LICDH_AwardLogo1.jpg?width=125&height=125&name=LICDH_AwardLogo1.jpg) ](http://www.sphanalytics.com/apex-awards/)[![U.S. News Best Ambulatory Surgery CentersHealthHome Best Ambulatory Surgery Centers](https://www.ligastrohealth.com/hs-fs/hubfs/image001.png?width=61&height=69&name=image001.png)](https://health.usnews.com/best-ascs)[![Physicians Endoscopy](https://www.ligastrohealth.com/hs-fs/hubfs/Licdh%20January2018%20Theme/Images/LICDH_FooterLogos_PhysiciansEndoscopy.jpg?width=231&height=82&name=LICDH_FooterLogos_PhysiciansEndoscopy.jpg)](http://www.endocenters.com/) Gastroenterology Associates (GA) specializes in the diagnosis and treatment of all types of gastrointestinal, liver, pancreatic and gallbladder diseases. 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